Apparatus and methods for manufacturing cigarettes

ABSTRACT

A device and method for trimming tobacco filler from the ends of cigarettes that are supported by a cartridge. The device provides a blade for cutting the tobacco filler.

FIELD OF THE INVENTION

The present invention relates to smoking articles, and in particular, tocigarettes. More specifically, the present invention relates toequipment and methods for manufacturing and handling relatively smallquantities of cigarettes in an automated fashion.

BACKGROUND OF THE INVENTION

Smoking articles, such as cigarettes, have a substantially cylindricalrod-shaped structure and include a charge, roll, or column of smokablematerial, such as shredded tobacco, surrounded by a paper wrapper, toform a “cigarette rod,” “smokable rod,” or a “tobacco rod.” A typicalcigarette has a cylindrical filter element axially aligned in anend-to-end relationship with the tobacco rod. Typically, the filterelement comprises plasticized cellulose acetate tow circumscribed by apaper material known as “plug wrap.” Certain cigarettes incorporatefilter elements comprising, for example, activated charcoal particles.Typically, the filter element is attached to one end of the tobacco rodusing a circumscribing wrapping material known as “tipping paper.” Aventilated or air-diluted smoking article can be provided with anoptional air-dilution means, such as a series of perforations, each ofwhich extend through the tipping material and plug wrap. Conventionalautomated cigarette rod making machines that have been employed for themanufacture of commercially popular packaged cigarettes are of the typecommercially available from Molins PLC or Hauni-Werke Korber & Co. KG.For example, a description of a commercially available “Protos”cigarette-making machine is provided in U.S. Pat. No. 4,474,190 toBrand, at col. 5, line 48 through col. 8, line 3. Types of equipmentsuitable for the manufacture of cigarettes also are set forth in U.S.Pat. App. Pub. No. 2004/0129281 to Hancock et al. A cigarette-makingmachine for making relatively small amounts of cigarettes has beenavailable commercially as “Hauni Baby” from Hauni-Werke Korber & Co. KG.Another type of portable cigarette-making machine has been set forth inU.S. Pat. No. 4,164,229 to Hurt.

A variety of hand-operated devices for manufacturing individualcigarettes have been proposed. See, for example, U.S. Pat. No. 2,376,103to Wahl; U.S. Pat. No. 2,425,888 to Matteson et al.; U.S. Pat. No.2,427,884 to Snodgrass; U.S. Pat. No. 2,427,957 to Getts; U.S. Pat. No.2,496,375 to Carter; U.S. Pat. No. 2,594,747 to DuLaney; U.S. Pat. No.2,699,788 to Kastner; U.S. Pat. No. 2,714,383 to Ming Gee; U.S. Pat. No.2,731,971 to Kastner; U.S. Pat. No. 2,850,019 to Sosa; U.S. Pat. No.2,868,209 to Marcotte; U.S. Pat. No. 3,006,348 to Banning, Jr.; U.S.Pat. No. 3,011,498 to Armelin; U.S. Pat. No. 4,832,056 to Bryant et al.and U.S. Pat. No. 4,534,367 to Newsome; PCT Application Pub. No. WO2004/110187 to Szabo; and European Patent No. EP 1,177,731 to Tinkles etal.

Various manners and methods for filling paper cigarette tubes withtobacco have been proposed. See, for example, U.S. Pat. No. 2,633,133 toHiggins; U.S. Pat. No. 3,124,141 to Seitter; U.S. Pat. No. 3,202,156 toKappeler et al.; U.S. Pat. No. 3,892,245 to Asbill, Jr.; U.S. Pat. No.4,167,948 to Moscovitch; U.S. Pat. No. 4,572,216 to Josuttis et al. andU.S. Pat. No. 5,072,740 to Gatschmann et al. See, also, U.S. Pat. No.3,491,768 to Paynter and U.S. Pat. No. 3,693,313 to Sexstone which setforth manners and methods for manufacturing individual cigarettes byfilling a tube or “spill” with a tobacco charge and a filter plug. Onetype of cigarette-making machine for the manufacture of one cigarette ata time using loose tobacco and a filtered cigarette tube has beenmarketed as “Bugler™” filter cigarette-making machine by Brown &Williamson Tobacco Corporation. Another type of automated machine forfilling pre-formed cigarette tubes with loose tobacco filler has beenavailable commercially as “Cig-a-mat” from Jenkins & Ott, Inc.. A devicerepresentative of such a machine is described in U.S. Pat. No. 3,645,272to Jenkins et al. Yet another type of automated device for fillingpre-formed cigarette tubes with tobacco filler is anelectrically-operated cigarette-making machine that has been availablecommercially as Easy Roller from C. P. Rolling ApS of Denmark.

A cigarette machine for filling pre-formed cigarette tubes with tobaccofiller has been produced commercially by The Central Tobacco Mfg. Co.Ltd. and marketed as “Premier Supermatic™” Other types of cigarettemachines for filing cigarette tubes with tobacco have been marketed as“Escort” and “Pressta Deluxe” by CTC Canada Inc. See, for example, therepresentative types of machines set forth in U.S. Pat. No. 3,127,900 toKastner and U.S. Pat. No. 4,771,793 to Kastner.

U.S. Pat. No. 3,822,710 to Bramhill proposes manufacturing individualcigarettes by inserting a cartridge of tobacco into an empty filter-tipcigarette tube. Other manners and methods for manufacturing individualcigarettes are set forth in U.S. Pat. No. 4,887,617 to Ruppert et al.;U.S. Pat. No. 5,018,536 to Liebich; U.S. Pat. No. 5,105,830 to Brackmannet al.; U.S. Pat. No. 5,133,366 to Liebich; U.S. Pat. No. 5,141,000 toRuppert et al.; U.S. Pat. No. 5,167,248 to Ruppert al.; U.S. Pat. No.5,197,495 to Ruppert et al.; U.S. Pat. No. 5,615,692 to Ruppert et al.;and U.S. Pat. No. 5,713,377 to Gerding et al.

Yet other manners and methods for fabricating cigarettes have beenproposed. For example, the manufacture of cigarettes using adispensing-type machine that has been proposed, and such a machine thathas the referred to as “Cigaretterie” has been marketed by NationalAmusement Network, Inc. A device representative of such a machine is setforth in U.S. Pat. No. 5,666,975 to Lord.

It would be desirable to provide for the manufacture of relatively smalllots of cigarettes in an efficient and effective manner. It would bedesirable that all of the cigarettes within each lot are of consistentquality. That is, it also would be desirable that all of the cigaretteswithin a lot be substantially identical to one another in appearance,size, shape, weight and component materials, including tobacco fillermaterials. It also would be highly desirable that the cigarettes withina lot exhibit similar performance characteristics, such as smokingcharacter, puff count and smoke yield.

SUMMARY OF THE INVENTION

The present invention relates to the manufacture of cigarettes in anautomated fashion. Cigarette manufacture is carried out such thatrelatively small lots of cigarettes can be manufactured during arelevant period. Cigarette manufacture most preferably is carried outsuch that substantially all of the cigarettes within a lot are ofconsistent quality.

A first aspect of the present invention relates to an apparatus ordevice for manufacturing cigarettes from loose tobacco and pre-formedtubular wrapping portions. The device includes a reservoir or hopperregion for receiving and containing loose tobacco filler. The devicealso includes, below the hopper region, several downwardly extendingpassageways for downward passage of loose tobacco filler from the hopperregion. The device also includes several receptacles, each ofpredetermined size, for receiving loose tobacco filler from eachrespective downwardly extending passageway (e.g., each individualdownwardly extending passageway provides tobacco filler to acorresponding receptacle).

Most preferably, the device incorporates one or more weights or otherstructures adapted to provide downward force or compression on loosetobacco filler within each downwardly extending passageway. Applicationof force to the tobacco filler within each downwardly extendingpassageway using the weight provides for altered arrangement of tobaccofiller within each passageway. Application of force to the tobaccofiller within each downwardly extending passageway using the weight alsoprovides for controlled feed of tobacco filler within each receptacle.The device most preferably incorporates at least one movable side wallfor each downwardly extending passageway, thereby providing for alteredarrangement of tobacco filler within each passageway as well ascontrolled feed or introduction of tobacco filler within eachreceptacle. As a result of the foregoing, for a particular blend oftobacco filler, a predetermined amount of tobacco filler can be suppliedto, and provided within, each receptacle.

The device further includes a compression mechanism for arranging apre-determined amount of loose tobacco filler within each receptacleinto a charge of tobacco filler of pre-determined shape and size (e.g.,a cylindrical shape that is capable of filling the hollow region of atubular wrapping portion). The device also includes a tray or cartridgefor containing a plurality of pre-formed tubular wrapping portions. Eachsuch wrapping portion has a hollow region, open at one end, forreceiving tobacco filler. The cartridge is adapted to be positionedrelative to the receptacles such that individual pre-formed tubularwrapping portions within the cartridge are aligned with correspondingindividual receptacles. The device also includes an insertion unitincluding a plurality of feeding units (e.g., movable insertion arms)for delivering each charge of tobacco filler from each receptacle intothe hollow region of each corresponding individual pre-formed tubularwrapping portion. That is, a tubular wrapping portion aligned with andadjacent to a corresponding receptacle is held in place while eachcharge of tobacco filler positioned within each receptacle istransferred from each receptacle through a nozzle into the hollow regionof each corresponding tubular wrapping portion.

A representative embodiment of a cigarette manufacturing apparatusincludes five downwardly extending passageways, five compression regionswithin the compression mechanism, five receptacles for formation of fivecharges of tobacco filler, five insertion arms, and a cartridgecontaining at least five hollow tubular wrapping portions; and, as such,five cigarettes can be manufactured substantially simultaneously byusing the apparatus to fill each of five wrapping portions with a formedcharge of tobacco filler. A representative lot of twenty cigarettes(e.g. a sufficient number of cigarettes to fill a traditional type ofcigarette package) can be provided using such a representative cigarettemanufacturing apparatus by employing at least a sufficient amount oftobacco filler to adequately fill twenty tubular wrapping portionscontained within a cartridge designed to hold twenty tubular wrappingportions, and after appropriate placement of the cartridge within theapparatus, carrying out the tobacco filler filling operation four times.

A second aspect of the invention relates to removal of tobacco from endsof cigarettes. Tobacco filler extending from the end of a plurality ofcigarettes can be removed by aligning a row of cigarettes and cuttingthat excess tobacco away from the ends of the cigarettes. Typically,after cigarettes have been manufactured using the representativeapparatus of the present invention, a slight amount of tobacco fillerlocated at the foremost lighting end of the cigarette may extendoutwards from the open end of the tubular wrapper portion. That is, aslight excess amount of tobacco filler may extend beyond that regioncircumscribed by the tube of wrapping material. A representativeembodiment of this aspect of the invention includes a circular, highlysharpened cutting blade rotating at a high speed which can be passed bythe lighting end of the cigarette, at or just beyond the end of thetubular wrapper portion, in order to cut excess tobacco filler away. Forexample, finished cigarettes can be properly aligned in a cartridge, ahighly sharpened cutting wheel configured in a general table saw type ofmanner can be aligned relative to the cartridge, and the cutting wheelcartridge can be rotated at a very high rate of speed and moved past thelighting ends of those cigarettes sufficiently close so as to cut excesstobacco filler away while not cutting or damaging the paper wrappingmaterial at the lighting ends of those cigarettes. Thus, in one aspectof the present invention, the ends of finished cigarettes positioned ina cartridge can be trimmed while those cigarettes are positioned withinthat cartridge.

A third aspect of the present invention relates to an apparatus ordevice for loading a cartridge with pre-formed hollow tubular wrappingportions useful for the manufacture of cigarettes. Such acartridge-loading device or assembly preferably includes a region forsupporting the cartridge in a manner that at least a portion of thecartridge can be loaded with tubular wrapping portions. The deviceoptionally includes a supply mechanism for supplying tubular wrappingportions to the cartridge. Specifically, the device is configured tofill the cartridge with a pre-determined number of tubular wrappingportions. In one embodiment, the supply mechanism includes an upperreservoir for receiving and containing a plurality of tubular wrappingportions, a hopper region including a plurality of downwardly extendingpassageways, a lower bed or tray located below the hopper region, and atransfer mechanism that facilitates transport tubular wrappers from thebed to corresponding locations within the cartridge. The downwardlyextending passageways are adapted so as to receive tubular wrappingportions. Thus, in an operation of this embodiment, an individualtubular wrapping portion within the upper reservoir falls into eachpassageway of the hopper, and hence, several vertically extendingcolumns of tubular wrapping portions are provided. Tubular wrappingportions positioned at the bottom of the supply mechanism are alignedwith desired locations on the cartridge, which is positioned in apredetermined location adjacent the bottom region of the supplymechanism. As a result, a series of movable rods can be used to push theseries of tubular wrapping portions from the bottom bed into desiredpositions within the cartridge.

A fourth aspect of the present invention relates to an apparatus ordevice for packaging cigarettes. One embodiment of this aspect of theinvention includes a device having a base that has a region for locatingan open cigarette package. The device also includes an upper region orplatform, above the base, adapted to support a cartridge containingfinished cigarettes. Below the upper platform is located a downwardlyextending passageway for the passage of cigarettes from the cartridgeand into the cigarette package. Removal of cigarettes from the cartridgeis accomplished by movement of the cartridge relative to the upperplatform such that cigarettes within the cartridge are pushed from thecartridge and into the downwardly extending passageway, travelingthereby into the package.

A fifth aspect of the present invention is directed to the use of thevarious components associated with various aspects of the presentinvention as a system to provide a cigarette product manufacturingassembly. In an exemplary embodiment, a specific tobacco filler blendcan be selected. Pre-formed tubular wrapping portions also can beselected. Empty tubular wrapping portions can be loaded into a cartridgeusing the cartridge-loading assembly. A cartridge carrying hollowtubular wrapping portions can be suitably positioned within thecigarette-making apparatus. The cigarette-making apparatus also can befitted with a removable hopper unit containing the selected tobaccofiller blend, or alternatively, the hopper unit can be appropriatelypositioned within the cigarette-making apparatus and then loaded withthe selected tobacco filler blend. Cigarettes are manufactured byfilling tubular wrapping portions with controlled amounts of loosetobacco filler until the cartridge is filled with manufacturedcigarettes. As such, numerous cigarettes of consistent quality (e.g., interms of components, dimensions, and weight) are produced. Thecartridge, filled with manufactured cigarettes, is removed from thecigarette-making apparatus. Any excess tobacco filler extending from thelighting ends of those cigarettes can be trimmed, in order that thevarious cigarettes have ends that are relatively uniform andaesthetically pleasing. The cigarettes are transferred from thecartridge into the cigarette packaging device, where the cigarettes areloaded into a package. As such, there is provided a manner or method formanufacturing and packaging relatively small quantities, lots, orbatches of finished cigarettes of consistent quality in an automatedfashion. It is particularly desirable to employ the cigarette-makingmachine in combination with all or certain of the foregoing devices in acommercial setting, such as a tobacco products retail establishment, inorder that a customer can choose a type or blend of tobacco filler for apackage of cigarettes, and view the production and handling of thecigarettes that are produced expressly for that customer by arepresentative of the retail establishment.

Although useful in many environments, it is particularly desirable toemploy the cigarette-making machine in combination with all or certainof the foregoing devices in a commercial setting, such as a tobaccoproducts retail establishment, in order that a customer can choose atype or blend of tobacco filler for a package of cigarettes, and viewthe production and handling of the cigarettes that are producedexpressly for that customer by a representative of the retailestablishment. The automated cigarette-making machine, thecartridge-loading device and the packaging device of the presentinvention each can be used, for example, for the manufacture ofcigarettes for personal use (e.g., for use at home), for the manufactureof specialty type cigarettes within tobacco products retailestablishments (e.g., for the production of individual packages ofcigarettes at tobacco shops), for the manufacture of small lots ofcigarettes for quality control or regulatory related activities, or forresearch and development purposes.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an apparatus for manufacturing aplurality of cigarettes by filling pre-formed tubular wrappers withloose tobacco filler, showing a front view of that apparatus;

FIG. 2 is an exploded view of various components of the hopper assemblyof the apparatus shown in FIG. 1;

FIG. 2A is a cut-away perspective detail view of a movable wall of thehopper assembly shown in FIG. 2;

FIG. 3 is a perspective view of the base and various components of theplunger mechanism of the apparatus shown in FIG. 1;

FIG. 4 is an enlarged perspective view of a tension arm of the apparatusshown in FIG. 1;

FIG. 5 is a perspective view of a cartridge of the apparatus shown inFIG. 1;

FIG. 6 is a perspective view of the cartridge of the apparatus shown inFIG. 1;

FIG. 7 is a perspective view of a compression assembly of the apparatusshown in FIG. 1, showing the upper portion thereof as partially cutaway, and showing the compression plates thereof in open positions;

FIG. 8 is a perspective view of an alternative embodiment of acompression assembly showing the upper portion thereof as partially cutaway, and showing the compression plates thereof in closed positions;

FIG. 9 is a cross-sectional view of the apparatus shown in FIG. 1 takenalong lines 9-9 in FIG. 1, and showing the compression plates in closedpositions;

FIG. 10 is a perspective view of the plunger assembly of the apparatusshown in FIG. 1;

FIG. 11 is a perspective view the apparatus shown in FIG. 1 showing arear view of that apparatus;

FIG. 12 is a perspective view of an apparatus for trimming tobaccostrands from the ends of cigarettes;

FIG. 13 is a perspective of the apparatus shown in FIG. 12 showing arear view of that apparatus;

FIG. 14 is a perspective view of an apparatus for filling a cartridgewith pre-formed tubular wrappers, the apparatus shown in the openposition;

FIG. 15 is a perspective view of an apparatus shown in FIG. 14, theapparatus shown in the closed position;

FIG. 16 is a perspective view of the base portion of the apparatus shownin FIG. 14;

FIG. 17 is a perspective view of an apparatus for filling a cigarettepackage with manufactured cigarettes;

FIG. 18 is a perspective view of an apparatus for filling a cigarettepackage with manufactured cigarettes.

FIG. 19 is a perspective view of a package of cigarettes.

FIG. 20 is a cross-sectional view of a pre-formed tubular wrapperrepresentative of the type used for the manufacture of a cigarette.

FIG. 21 is a cross-sectional view of a finished cigarette.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIG. 1, there is shown an automated device or apparatus 10for manufacturing a plurality of cigarettes 13 by filling pre-formedfiltered tubular wrappers 21 with loose tobacco filler (not shown). Forthe embodiment shown, the automated cigarette-making apparatus isdesigned to simultaneously manufacture five cigarettes by simultaneouslyfilling the hollow portions of five pre-formed tubular wrappers withfive cylindrical charges formed from loose tobacco filler.

The cigarette manufacturing apparatus 10 includes a lower base 31, whichcan be manufactured from a suitable material, such as metal (e.g.,stainless steel, brass or aluminum), plastic (e.g., polycarbonate,polymethylmethacrylate, acrylate/butadiene/styrene or ABS type plastic,nylon, or other suitable polymeric material), composite material (e.g.,a graphite-based ceramic), or like material; but preferably ismanufactured from aluminum. Although the shape and dimensions of thebase can vary, and can be a matter of design choice, a representativebase is generally rectangular and is about 35 cm deep, about 25 cm wide,and about 2 cm high. A perspective view of the base 31 is describedbelow with reference to FIG. 3.

If desired, various components of the cigarette manufacturing apparatus10 can be covered with an aesthetically pleasing cover (not shown). Forexample, portions of the base 31 can be adapted to support an optionalformed plastic cover of a desired design and color.

The base 31 supports a movable tray or cartridge 38, which can bemanufactured from a suitable material above, but preferably ismanufactured from a metal, such as aluminum. The cartridge 38 preferablyis adapted to be movable from side to side relative to the base 31,along the longitudinal axis of the cartridge 38. Movement can befacilitated manually by a machine operator. Although the dimensions ofthe cartridge 38 can vary, and can be a matter of design choice, arepresentative, generally rectangular-shaped cartridge is about 7 cmdeep, about 26.5 cm long, and about 2.5 cm high. Rear and front views ofthe cartridge 38 are shown, respectively, in FIGS. 5 and 6.

Referring to FIGS. 1, 5, and 6, the cartridge 38 includes a series ofparallel rounded grooves 48 in its upper face, with the grooves 48 beingoriented perpendicular to the longitudinal axis of the cartridge 38. Thesize and shape of the grooves can vary, and generally depend uponfactors such as the size of a pre-formed tubular wrapper 21 that isproperly positioned in each respective groove 48. That is, each groove48 acts as a type of cradle for a pre-formed tubular wrapper 21. Arepresentative groove is designed to hold a pre-formed tubular wrapperthat is about 86 mm long with a circumference of about 24.5 mm. Therepresentative groove has a generally semi-circular shape of about 4.4mm radius and is about 60 mm long. As such, each tubular wrapper canextend about 30 mm beyond the rear face of the cartridge. For theembodiment shown, the cartridge 38 includes twenty grooves 48, and thusthe cartridge 38 can hold twenty pre-formed tubular wrappers 21 for themanufacture of twenty cigarettes.

The cartridge 38 preferably is adapted to be removable from the base 31.Thus, a cartridge 38 loaded with empty tubular wrappers 21 can bepositioned on the base 31, loaded with loose tobacco filler (not shown),and—once loaded with finished cigarettes resulting from the tubularwrappers 21 having been filled with tobacco filler—can be removed fromthe base 31 for packaging or use. It is highly preferred that thetubular wrappers 21 within the cartridge 38 are positioned lying ontheir sides (e.g., the longitudinal axis of each is parallel to, orsubstantially parallel to, the horizontal plane). The cartridge 38preferably acts as a source and holder of tubular wrappers 21 that areemployed during the cigarette-manufacturing process using thecigarette-making apparatus, as well as a holder for transfer of finishedcigarettes 13 manufactured using that apparatus 10 to a package fillingdevice.

The cartridge 38 preferably is adapted to be capable of being maintainedfirmly in place relative to the base 31 during periods when theapparatus 10 is being used to insert loose tobacco filler into selectedtubular wrappers 21. Appropriate secure positioning of the cartridgewithin the base preferably is accomplished by any suitable means. Forexample, the cartridge 38 may be laterally secured to the base 31 using,for example, a pin or key type of design (e.g., a square key stock 834,such as is illustrated in FIG. 14) whereby a protrusion located at apredetermined position in the base 31 cooperates with a coordinatinghole or slot located at a predetermined location in the bottom face ofthe cartridge 38. In addition, as shown in FIGS. 1 and 3, a backstopwall 68, or other suitably designed backstop means, protruding upwardlyacross the length of the front end of the base 31, acts to hold thecartridge (and pre-formed tubular wrappers carried thereby) in placerelative to the base. Use of the backstop wall 68 and/or other securingmeans may thus minimize or prevent undesirable effects of lateralmovement (whether side-to-side or back-and-forth) during normaloperation of the apparatus 10.

The base 31 also supports a compression assembly 75 (which is discussedin greater detail below with reference to FIGS. 7-8). The compressionassembly 75, in turn, supports a hopper assembly 80. Extending upwardsand supported by the base 31 is a support frame 85, which can bemanufactured from a suitable material, but preferably is manufacturedfrom aluminum. The support frame 85 preferably is connected to theremainder of the apparatus 10 using screws, or other suitable connectionmeans for adequately securing the various components in place. Forexample, screws may be threaded through the compression assembly 75 andinto the bottom face of the support frame 85. The support frame 85preferably is adapted to support an upper weight-source assembly 92.

The tobacco hopper assembly 80 also includes a hopper unit 99. Thehopper unit 99 is adapted to be maintained firmly in place relative tothe compression assembly 75 during periods when the apparatus 10 isbeing used to insert loose tobacco filler into selected tubular wrappers21. Such firm positioning of the hopper unit 99 preferably isaccomplished by appropriately positioned coordinating locating slots andpins (not shown). As such, the hopper unit 99 functions as a source ofloose tobacco filler that is processed using the apparatus 10 to producefinished cigarettes.

Various components of the hopper assembly 80 preferably are adapted tobe removable from the compression assembly 75, in order that therelevant hopper assembly components can be serviced or cleaned. In apreferred embodiment of the apparatus 10, individual hopper units, eachcontaining a different blend of loose tobacco filler, can readily beremoved and substituted for one another. The desired secure positioningof each removable hopper unit 99 relative to the other components of theapparatus 10 preferably is facilitated by placement of protruding pinson the bottom of the hopper unit and complementary mating holes in thetop of the compression assembly 75. By use of the pin/hole arrangementor another suitable mechanism, the hopper unit can appropriately bealigned with the other components of the apparatus.

Referring to FIGS. 1 and 2, the hopper unit 99 includes an open upperreservoir region 110 into which loose tobacco filler (not shown) can bedeposited. A top wall 114 of an intermediate hopper portion 118 definesthe bottom of the upper reservoir region. The top wall 114 can bemanufactured from any suitable metallic material, such as aluminum. Thetop wall 114 includes a series of openings 124. For the embodimentshown, the top wall 114 includes five openings 124. The longitudinalaxis of the top wall 114 preferably is generally parallel to thelongitudinal axis of the cartridge 38. Each opening 124 extendstransversely to the longitudinal axis of the top wall 114. Each opening124 provides access to a vertical passageway or channel through theintermediate hopper portion 118 for the controlled transport of tobaccofiller (not shown) from the upper reservoir region 110 to the bottom ofthe intermediate hopper portion 118. For example, for the manufacture ofa cigarette having a tobacco rod length of about 56 mm, each openingpreferably is about 10 mm to about 12 mm wide by about 55 mm to about 60mm long. Preferably, each corresponding vertical passageway in theintermediate hopper portion 118 is sufficient to provide for passage ofa charge of tobacco sufficient to provide about four or about fivefillings of about four or about five individual tubular wrappers. Forthe manufacture of a cigarette from a hollow tubular rod having atobacco rod section of about 56 mm in length and about 24.5 mm incircumference, a representative preferred opening has dimensions of10.25 mm wide by about 58 mm long.

The dimensions of the upper reservoir region 110 may vary depending uponthe amount of tobacco desired to be used with the apparatus 10.Preferably, the upper reservoir region 110 has the capability ofcontaining about 50 g to about 100 g of loose tobacco filler (notshown). A representative upper reservoir region 110 includes outwardlysloping walls 130 that extend upwards and outwards from the top wall 114of the intermediate hopper portion 118 to a vertical height of about 2cm to about 5 cm. Those outwardly sloping walls can be manufactured fromany suitable material and preferably include a metallic material, suchas stainless steel.

The intermediate hopper portion 118 is defined by top wall 114, frontwall 140, fixed left side wall 350, a rear wall 370, movable right sidewall 360 and bottom wall 162. A representative intermediate hopperassembly has dimensions of about 29 cm wide, about 10.1 cm long, andabout 10 cm high. Preferably, the walls of the representativeintermediate hopper region are manufactured from sheets of a clearmaterial such as polycarbonate or polymethylmethacrylate, in order thatthe presence or absence of loose tobacco filler in the intermediatehopper region readily can be viewed.

A series of side walls 350, 360 extend downwardly within theintermediate hopper portion 118. That is, for each opening 124, a fixedwall 350 and a movable wall 360 extend downwardly from the bottom of thetop wall 114 of the intermediate hopper portion 118, thereby forming avertically extending passageway extending downwardly from each opening124. Each movable wall 360 is movable relative to the other componentsof the intermediate hopper portion 118. That is, the movable walls 360of the intermediate hopper portion 118 can be moved back and forth alonga front-to-rear axis that is perpendicular to the longitudinal axis ofthe top wall 114. This front to back movement preferably may be effectedby an operator using an appropriately connected wall-moving handle 160that extends across the front exterior region of the intermediate hopperportion 118. An appropriate connection of the wall-moving handle 160 tothe movable walls 360 may include screws or bolts combined with spacers,rivets, or any other suitable connection means. Preferably, areciprocating motion of a wall-moving handle 160 helps tobacco filler togently settle within each passageway, hence providing a consistentamount of tobacco filler in each tobacco charge that is used duringcigarette manufacture. The wall-moving handle 160 can be manufacturedfrom any suitable material, such as wood, plastic,polytetrafluoroethylene, or aluminum.

The bottom region of hopper assembly 80 includes a bottom wall 162,which includes a series of bottom wall slots 395. A movable slat 165 islocated below the bottom wall 162. The movable slat 165 is adapted to bemovable back and forth along its longitudinal axis within the lowerregion of the hopper unit 99. An exemplary movable slat can bemanufactured from any suitable material and preferably is manufacturedfrom a metallic material, such as stainless steel. A representativemovable slat is about 6.5 cm wide, about 29 cm long, and about 1.6 mmthick. The movable slat 165 includes a series of slat apertures 368that, when the movable slat 165 is in an “open” position are alignedwith the openings 124 of the top wall 114, the vertical passageways, andthe bottom wall slots 395 of the bottom wall 162. As is described belowwith more specific reference to FIG. 2, movement of the slat 165 to oneside (e.g., to the right) allows alignment of each vertical passagewayand its corresponding bottom wall slot 395 with each respective slataperture 368 in the slat 165, thus allowing tobacco filler to fallthrough the hopper unit 99 and into the compression assembly 75.Movement of the slat 165 to the other side (e.g., to the left) allowsclosure of the passageways through the hopper unit 99. As such, when theslat 165 is moved to a “closed” position tobacco filler is retainedwithin the hopper unit 99, which can then be removed from the apparatus10 without a resulting spillage of significant quantities of tobaccofiller.

Referring again to FIG. 1, above the upper region of the hopper assembly80 is positioned a weight-source assembly 92. The weight-source assembly92 includes several ball slides 170 or other suitable means forsupplying compressive force to tobacco filler (not shown) within theintermediate hopper portion 118. Representative ball slides areavailable as “Del-Tron SA1-1” from Del-Tron, Inc. Each ball slide 170 issuitably connected to the support frame 85 so as to maintain theweight-source assembly 92 appropriately positioned above the hopper unit99.

Each ball slide 170 is suitably adapted so as to provide for the desiredmovement and positioning of a series of weights 177. For the embodimentshown, the apparatus 10 includes five weights 177. Each weight 177 isappropriately attached (e.g., using fasteners such as screws) to acorresponding ball slide 170. Each weight 177 is adapted to travel upand down with each respective ball slide 170 in an appropriate channel197. A series of spring plungers 207, or other suitable control means,within each ball slide 170 acts to hold each respective weight and ballslide in an “up” position (as shown in FIG. 1). The spring plungers 207are releasable to allow the weight into a “down” position providingdownward force to compress or compact tobacco filler in the hopperassembly 80 and provide for a generally consistent flow of the tobaccoto the receptacles 641 below the hopper assembly 80.

Each weight 177 includes a bottom foot 217 that preferably is adapted tofit within corresponding opening 124 below that weight 177. Preferably,each foot 217 also is adapted so as to provide for ensuring compressionof the tobacco filler within each corresponding vertical passageway ofthe hopper unit 99. In a representative embodiment, each weightpreferably has a mass of about 150 g to about 400 g, more about 200 g toabout 300 g, and most preferably about 200 g. Optionally, the mass ofeach individual weight 177 can be changed (e.g., by adapting each weightso that smaller weights can be added and taken away, in order that thedownward compressive force can be selected and controlled). For example,an optional, additional weight 220 can be positioned on top of weight177 such that the degree of downward compressive force would beincreased. In operation, a series of additional weights optionally canbe positioned on top of each weight 177, and as tobacco filler isgradually removed from each vertical passageway for cigarettemanufacture, the additional weights can be removed, as desired, fromeach larger weight to prevent a disproportionate downward pressure on alesser volume of tobacco filler.

Most preferably, each weight 177 provides substantially identicaldownward compressive force. However, the amount of downward forceprovided to the tobacco material in each vertical passageway of thehopper unit 99 can be varied between individual vertical passageways,depending upon factors such as the relative amount of tobacco filler ineach passageway. Preferably, the weight-source assembly 92 is configuredsuch that the loose tobacco filler within each vertical passageway isconsistently or uniformly positioned within each passageway, and thepacking density of the tobacco filler within each passageway arecomparable within each passageway. Control of the downward compressiveforce to the tobacco filler is desirable in order to control the amountof tobacco filler used for the manufacture of each individual cigarette.For example, a mechanism such as a set of force gauges or scales (notshown) may be positioned within each vertical passageway or attached tothe top of each of the weights in order to monitor the degree ofdownward force applied to the tobacco filler therein.

Referring now to FIGS. 1 and 7, the compression assembly 75 includes aplurality of nozzles 230. For the embodiment shown in FIGS. 1-11, theapparatus 10 includes five nozzles 230. Each nozzle 230 preferably isdesigned such that the open end of a hollow pre-formed tubular wrapper21 fits over that nozzle 230 such that tobacco filler (not shown) can betransported through that nozzle 230 and into a corresponding tubularwrapper 21. Representative nozzles preferably are manufactured from ametallic material, such as stainless steel. Preferably, each nozzle isgenerally cylindrical in shape; and a representative nozzle (for use inconjunction with a pre-formed tubular wrapper having a circumference ofabout 24.5 mm) has an inner diameter of about 6.75 mm and an outerdiameter of about 7.25 mm.

For the embodiment shown in FIGS. 1 and 7, each tubular wrapper 21 isaxially aligned with a corresponding nozzle 230 and is positioned so asto be inclined at a slight angle (e.g., about 50 relative tohorizontal). It is preferred that the tubular wrappers 21 located on thecartridge 38 rest in a horizontal plane that is slightly below a centralplane of the nozzles 230. Thus, when the open end of a tubular wrapper21 extends around a nozzle 230, it (the open end) is raised slightlyhigher than the other (e.g., filtered) end.

The compression assembly 75 is located on and supported by the base 31.Preferably, the compression assembly 75 is attached securely to the base31 using several screws, or other appropriate fastening means. Theremovable hopper unit 99 preferably is maintained in place on top of thecompression assembly 75 by a suitable number of appropriately positionedlocating pins (not shown). That is, several positioning pins ofappropriate shape and size can be located in the bottom of the hopperunit 99, and corresponding location holes can be positioned in the topface of the compression assembly. Any other suitable structure may beused to maintain the relative positions of the hopper unit 99 and thecompression assembly 75.

As shown in FIG. 9, a plunger assembly 248 is located in the back regionof the apparatus 10. The plunger assembly 248 includes several plungerarms 251 that extend forward, and are mounted on a plunger armcross-member 257. When an operator moves the plunger assembly 248forward, each plunger arm 251 moves correspondingly to push a charge oftobacco filler (not shown) from each corresponding receptacle area 641located within the compression assembly 75 into each correspondingtubular wrapper 21.

Referring to FIGS. 1 and 7, the apparatus 10 includes two operationalarms: a compression arm 260 and a plunger arm 261. The compression arm260 is located on the left side of the apparatus. The compression arm260 is used to arrange tobacco filler within the compression assembly 75so as to form a plurality of cylindrical charges for insertion intocorresponding pre-formed tubular wrappers 21, and thereby form severalcigarettes. The function of the compression arm 260 is described belowwith reference to FIG. 7. The plunger arm 261 is located on the rightside of the apparatus. The plunger arm 261 is used to facilitatemovement of the plunger assembly 248, and hence facilitate insertion ofa formed cylindrical charge of tobacco filler within a correspondingpre-formed tubular wrapper 21. The function of the compression arm 260is described below with reference to FIG. 3. Representative operationalarms may be manufactured from any suitable material, and preferably aremanufactured from aluminum.

The operational arms or handles 260, 261 that are shown are eachdesigned to be operated within a horizontal plane. The design andselection of the operational arms are such that the operationalmechanism (e.g., a gear and/or spring mechanism such as, for example thecompression assembly 75 or the plunger assembly 248) can provide theappropriate amount of force to readily operate the apparatus in anefficient and effective manner (i.e., the operational arms 260, 261 canbe repeatedly moved back and forth to provide the desired effect ofmoving tobacco with relative ease of the operator). Alternatively,either or both of the operational arms can be substituted with othermeans for providing the desired operational effect, such as in-linetoggle clamp handles.

Referring to FIG. 2, there is shown an exploded view of variouscomponents of a portion of the hopper unit 99 of the cigarette-makingapparatus 10 previously described with reference to FIG. 1. The upperreservoir region 110 is positioned over the top wall 114. The top wallincludes a series of openings 124. Beneath the top wall 114, andpositioned to the left side of each respective opening 124 is fixed wall350. Beneath the top wall 114, and positioned to the right side of eachrespective opening 124 is movable wall 360. The desired location of thefixed walls 350 relative to the other components of the hopper unit 99can be accomplished by attaching the fixed walls 350 to predeterminedpositions on the rear wall 370 and the front wall 140 of the hopperunit, using screws or other suitable fastening means.

In the illustrated embodiment of FIG. 2, the movable side walls 360 eachhave a tongued front and rear edge 361, 362. This is shown in greaterdetail in FIG. 2A, which shows an enlarged cut-away perspective viewalong line 2A-2A of FIG. 2. The tongued rear edges 362 fit intocomplementary rear wall grooves 376, and the tongued front edges 361 fitinto complementary front wall grooves 377. The movable walls 360 aresized and positioned between front and rear walls 140, 370 suchthat—with the aforementioned tongue and groove configuration—the walls360 are movable back and forth along a front-to-rear axis. The tonguededges 361, 362 and grooves 376, 377 are sized and positioned such that,even as the walls 360 move back and forth, the tongue-and-groovemaintains a patent separation of spaces on either side of each wall 360.Preferably the tolerance between each tongue and groove is sufficientlyclose that tobacco substantially is prevented from getting into thespace between each tongue and its corresponding groove. The front edge361 of each movable wall 360 is attached to a wall-moving handle 160.The configuration is such that a repeated movement of the wall-movinghandle 160 provides corresponding movement of each movable wall,resulting in a convenient manner or method for providing a type ofreciprocating movement of each movable wall. The movable walls 360preferably are attached to the wall-moving handle 160 using screws, orother suitable fastening means, that extend slidably through the frontwall 140. The hopper unit 99 also includes a bottom wall 162.

A movable slat 165 is positioned below the bottom wall 162. The slat 165can be moved laterally along its longitudinal axis in such a manner thatslat apertures 368 therein can alternately be aligned, or not aligned,with the corresponding bottom wall slots 395 in the bottom wall 162.Preferably, the slots 395 in the bottom wall 162 generally resemble theopenings 124 in the top wall 114 in overall shape. However, it ispreferred that the bottom wall slots 395 be slightly larger than thecorresponding openings 124 in the top wall 114. For the manufacture of acigarette from a hollow tubular rod having a tobacco rod section ofabout 56 mm in length and about 24.5 mm in circumference, arepresentative preferred opening in the bottom wall has dimensions of 12mm wide by about 58 mm to about 60 mm deep. It is also preferred thatthe dimensions of the slots 395 in the bottom wall 162 be substantiallyidentical to those of the corresponding apertures 368 in the slat 165.Controlled movement of the slat 165 is allowed by tracking slots 411being moveable about corresponding shoulder pins 412 or other suitablemeans. The slat 165 can include an optional handle aperture 415 thatprovides a type of handle for grasping and sliding the slat 165 back andforth.

In one embodiment, the major surfaces of the fixed and movable sidewalls 350, 360 are all substantially vertical and parallel to eachother. In certain preferred embodiments, each of the fixed and movableside walls 350, 360 is broader near its top end and tapers narrower nearits bottom end. This configuration provides a vertical passage betweenthe side walls 350, 360 that is slightly broader at its bottom than atits top. For example in one preferred configuration, the major faces ofeach side wall each taper about 0.50 to about 10 from vertical.Alternatively, the side walls are slightly tilted toward each other atthe top to achieve this effect. A vertical passage of such a shape ispreferred in that downward movement of tobacco filler of a tobaccofiller column within that passage is facilitated or promoted.

For the embodiment shown in FIG. 2, the major face or inner surface ofeach wall 350, 360 that makes up the right and left inner face of eachvertical passageway is generally flat; and hence the gradual increase inwidth of each passageway from top to bottom is linear in nature.However, in alternative embodiments, the major face of each panel may bemodified so as to be slightly curved, and thereby provide a non-lineardownward increase in the width of each passage.

FIG. 3 depicts the main base 31 of the cigarette manufacturing apparatus10 previously described with reference to FIG. 1. The base 31 supports atobacco filler insertion mechanism 300. The mechanism 300 includes ahorizontally extending generally triangular-shaped base 310 that is, inturn, mounted on and slightly above the main base 31. The triangularbase 310 can be manufactured from any suitable material, but preferablyis manufactured from aluminum. A representative triangular base is about20 cm in length, about 13 cm in width, and about 1.3 cm in height. Thetriangular base 310 supports three gears 316, 317, 318. The first gear316 is larger and the second and third gears 317, 318 are smaller thanthe first gear 316, but about the same size as each other. The firstgear 316 is operably attached to the plunger arm 261. Representativegears can be manufactured from any suitable material, such as steel oraluminum. The gears 316, 317, 318 are substantially coplanar and each ispositioned so as to rotate about a vertical axis. A representativelarger gear includes 48 teeth, each of 5 mm pitch. Representativesmaller gears each include 32 teeth, and each tooth has a pitch of 5 mm.In the illustrated embodiment of FIG. 3, the three gears support a belt325 that is adapted to move in a generally horizontal plane in responseto a rotation of the gears 316, 317, 318. A representative belt is aslightly elastic belt composed of neoprene, rubber, or another suitablematerial. The representative belt has length of about 61 cm, andincludes one hundred twenty two grooves each of 5 mm pitch. Alsosupported by triangular-shaped base 310 is a belt tensioner 328, orother suitable means for facilitating removal, tightening and operationof the belt 325.

In the assembled apparatus 10, a plunger assembly 248 (shown in FIGS. 1and 11) is located beneath the triangular-shaped base 310, and supportedabove the main base 31. The base 31 also includes a first plunger stop335 located near the rear edge of the base 31. The first plunger armstop 335 extends upwards, and acts to limit the rearward movement of theplunger arm cross-member 257 (see FIGS. 10 and 11) of the plungerassembly 248. The base 31 also includes a second plunger arm stop 338located forward of the first plunger arm stop 335. The second plungerarm stop 338 extends upwards, and acts to limit the forward movement ofthe plunger arm cross-member 257 (see FIGS. 10 and 11) of the plungerassembly 248.

The backstop wall 68 defines the front end of the base 31 and extendsabove its upper surface. The main base 31 includes several guidancegrooves 346 within its upper face. The guidance grooves 346 extendlongitudinally across the base 31. For the embodiment shown in FIG. 3,the upper face of the main base 31 includes five guidance grooves 346.The guidance grooves 346 serve as a track for the guides 728 of theplunger arm assembly 248 (see FIG. 10). One representative guidancegroove design provides grooves each having a width of about 9.5 mm and alength of about 8.8 cm. Another representative guidance groove designprovides grooves each having a width of about 12 mm and a length ofabout 9.4 cm.

The base 31 also includes a front platform portion 382 immediately rearof the backstop wall 68. The front platform portion 382 provides aregion configured to support a cartridge 38 in a proper position andlocation for making cigarettes with the apparatus 10. The main base 31includes an broad recess 354 at the front edge of the guidance grooves346. The dimensions of a representative opening region 354 are about 6cm deep and about 22 cm wide. A plurality of spaced tension arms 365 ispositioned within the broad recess 354. For the embodiment shown in FIG.3, the main base 31 includes five tension arms 365. The tension arms 365are mounted on an axle 369 that extends transversely across the broadrecess 354, with its ends secured rotatably in the sides of the base 31.A plurality of spacers 372 is individually positioned about the axisbetween adjacent tension arms 365. The tension arms 365 are designed topivot on the axle 369.

In the assembled apparatus 10, tension arms 365 are located beneathfilling nozzles 230 of the compression assembly 75 (see FIG. 7) and eachis designed to hold a corresponding tubular wrapper 21 in positionduring the filling operation. This holding function preferably ensurescomplete and consistent filling of the wrapper 21 with tobacco fillerduring an operation of the apparatus 10. As is explained below withreference to FIGS. 1 and 4, each tension arm 365 exerts force upon acorresponding tubular wrapper 21 during the time when the tubularwrapper 21 is being filled with tobacco filler, and facilitatesmaintenance of the tubular wrapper in place relative to the nozzleduring that period. A representative tension arm has a height of about 3cm, a width of about 9 mm, and a length of about 7.4 cm. Representativespacers each are cylindrical in shape and are about 13 mm outerdiameter, about 6.5 mm inner diameter, and about 4 cm long.Representative spacers are manufactured from aluminum.

Referring to FIGS. 3 and 4, the tension arms 365 each include a frontarm portion 379. Each front arm portion 379 is located in front of theaxle 369. For example, a representative front arm portion extendsforward about 46 mm from the center of the axle. Each front arm portionpreferably is adapted and positioned so as to have the ability to extendslightly above the upper surface of the front platform portion 382 ofthe base 31 (e.g., about 2 mm above the base). Each front arm portion379 is of a size and shape, and is positioned, such that it will bepushed downward when a cartridge 38 is positioned on the upper surfaceof the front platform portion 382 of the base 31.

The tension arms 365 each include an upper arm surface 385. Each upperarm surface 385 is located in front of the axle 369. As a result, adownward movement of the front arm portion 379 of each tension arm alsoresults in a downward movement of each respective upper arm surface 385.A representative upper arm surface has a generally concave shape and isdesigned to act as a support for the open end of a tubular wrapper. Arepresentative upper arm surface corresponds to about one third of thecircumference of the open end region of the tubular wrapper that iscradled thereon. Each representative upper portion extends upwards about5 mm to about 10 mm above the upper surface of the base 31.Representative tension arms, and particularly the upper faces of thosetension arms, are manufactured from nylon, or another suitable material.Representative tension arms, and particularly the upper surface of thethose tension arm, also can be manufactured from metal coated with anelastomer in order to provide a surface exhibiting some friction, andthereby improving the ability of the tension arm to clamp and hold atubular wrapper to a nozzle of the compression assembly.

The tension arms 365 each include a rear arm portion 390. In arepresentative embodiment, each rear arm portion extends rearwards about28 mm from of the center of the axle. Each rear arm portion 390 of eachtension arm 365 preferably is located adjacent the front end of eachcorresponding guidance groove 346. During an operation of the apparatus10, the tension arms interact with the plunger arm assembly, which isdescribed below with reference to FIG. 10.

In FIG. 3, the foremost tension arm 365 is illustrated with a tensionarm spring 400 extending upward from the upper face of the rear armportion 390. In a preferred embodiment, each of the tension arms 365includes a tension arm spring 400. When the tension arm 365 is assembledto the apparatus 10, each of the tension arm springs 400 extends upagainst the underside of the compression assembly 75 that reststhereabove. A representative spring, when at rest, has a diameter ofabout 2 mm and a length of about 15 mm. When at rest, the springs 400hold the tension arms 365 in a “rocked-back” position. That is, thetension arm spring 400 acts to maintain the back portion of the tensionarm in a down position when (i) upward force is not being applied to theback portion, or (ii) when downward force is not being applied to thefront portion.

The front platform portion 382 preferably includes a key stock 410extending upwards therefrom. The key stock 410 provides for a convenientmanner of positioning of a cartridge securely in a desired positionrelative to the base 31. For the embodiment shown in FIG. 3, the keystock 410 is a longitudinal protrusion with a square cross-section thatextends from front to rear of the front platform portion 382. That is,the stock is designed to align with each of a series of mating grooves515 located at pre-determined locations on the bottom face of acartridge 38 (see FIG. 5). As such, there is provided a precise anddesired alignment of a set of five tubular wrappers with fivecorresponding nozzles 230 extending from the compression assembly 75 ofthe apparatus 10 (see FIGS. 1 and 4).

Referring to FIG. 4, there is shown a tension arm 365 that isrepresentative of the design of the type of tension arm describedpreviously with reference to FIG. 3. The tension arm 365 includes a axlepassage 416 extending transversely therethrough, in order to provide aregion for the axle 369 of the main base 31 to pass and hence provide apivot axis. The top of the rear arm portion 390 includes a divot 418that acts as a seat for a tension arm spring 400. The tension arm 365also includes a front arm portion 379 that extends slightly upwardsrelative to the rear arm portion 390. The upper surface portion 385 thatextends upwards relative to the forward and back regions preferably hasan arcuate shape (e.g., covering about 120° to about 180°). The arcuateshape can be employed to support the end of a tubular wrapper portionand apply pressure that holds the wrapper 21 against the lower outersurface region of a nozzle 230. This function is described below ingreater detail, with reference to an operation of the apparatus 10.

Referring to FIGS. 5 and 6, there are shown rear and front views of acartridge 38. As is shown in FIG. 5, the cartridge 38 preferably isconfigured to be capable of being maintained laterally in place relativeto the base of the cigarette manufacturing. Appropriate securepositioning of the cartridge 38 relative to the base 31 is accomplishedin the illustrated embodiment by engaging one of the mating grooves 515with the raised key stock 410 (see FIG. 3) located on the front platformportion 382 of the base 31. Other structures and/or methods foradjusting the location of a cartridge 38 on or within the cigarettemanufacturing apparatus, and for securing the cartridge 38 at a desiredlocation within the apparatus 10, can be employed (e.g., through the useof clamps, adjustable threaded nuts, or the like). For the embodimentshown in FIGS. 5 and 6, the cartridge 38 includes four mating grooves515. With this configuration, a base 31 including a single protruding,cooperating key stock 410 allows for the secure alignment orregistration of the cartridge 38 in at least four independent positionson the base 31 of the cigarette manufacturing apparatus 10.

The cartridge 38 preferably also includes at least one optionalcoordinating slot 535 on its bottom face at a predetermined locationthat is a distance apart from the location of slots 515. Thecoordinating slot 535 can be used in order to provide for a desiredpositioning of the cartridge within one or more other devices, such as,for example, an apparatus designed to fill an empty cartridge withpre-formed tubular wrappers, a device to trim the ends of tobaccocharges in cigarettes on the cartridge, or a device to transfercigarettes from the cartridge to a container. A representative devicefor trimming cigarette ends is described below with reference to FIGS.12 and 13. A representative apparatus for filling a cartridge 38 withempty tubular wrappers 21 is described in greater detail below withreference to FIG. 14 through FIG. 16.

The cartridge 38 includes a raised region 540 on the front thereof. Theraised region 540 facilitates capture and control of the filter ends ofthe tubular wrappers 21 within a series of preferably semi-cylindricalgrooves 48 on the cartridge. As such, desired positioning of the tubularwrappers on the cartridge is promoted. When the cartridge 38 is loadedwith pre-formed tubular wrappers 21, the filtered ends of those tubularwrappers 21 are situated at least partially within a series of cavities541 within the raised region 540 of the cartridge, and the open ends ofthose tubular wrappers 21 are oriented toward the rear of the cartridge38.

Referring to FIG. 6, there is shown a front view of the cartridge 38. Aseries of cylindrical push-through openings 550 is aligned across thefront face 548 of the cartridge 38. Each opening 550 extends through theraised front region of the cartridge to a corresponding cavity 541, andis aligned with a corresponding groove 48. Referring to a representativeembodiment, for a cartridge adapted to contain tubular wrappers havingcircumferences of about 7 mm to about 8.5 mm, the representativepassageway has a diameter of about 5 mm. That is, it is highly preferredthat each push-through opening is not so large as to allow a wrappercigarette to pass therethrough. The openings 550 allow for cigarettespositioned on the cartridge 38 to be removed from the cartridge byinserting appropriately sized rods into the openings so as to push thecigarettes from the cartridge. A device for facilitating this operationis described below with reference to FIGS. 17 and 18.

In FIGS. 7 and 8, there is shown a tobacco filler rod-formingcompression assembly 75. During a preferred operation of the compressionassembly 75, loose tobacco filler is arranged into a charge of tobacco,which preferably is rod-shaped. The embodiments of FIGS. 7 and 8 aresubstantially similar, except that the embodiment of FIG. 8 incorporatesan alternative handle design. Referring to FIG. 7, the compressionassembly 75 includes a top plate 600 that is shown as partially cutaway. The compression assembly 75 also includes a bottom plate 605. Eachof the top and bottom plates 600, 605 are connected by bolts 606,rivets, or another suitable connector means so as to remain in positionrelative to one another. The plates 600, 605 are also configured to beheld consistently in a desired position on the main base 31 of thecigarette manufacturing apparatus 10. The top plate 600 and the bottomplate 605 each can be manufactured from any suitable material, butpreferably are manufactured from brass.

In the embodiment shown in FIG. 7, the top plate 600 includes five fillslots 608 in its top plate, and each fill slot 608 extends transverselyto the longitudinal axis of the compression assembly 75. The middlethree fill slots 608 are in the cutaway portion of the top plate 600 andare therefore not shown in FIGS. 7 and 8; however, the entire leftmostfill slot 608 and the interior right-side portion of the rightmost fillslot 608 are shown therein. Each fill slot 608 serves as a passagewayfor filling a lower receptacle area 641 with a charge of tobacco filler.For the embodiment shown in FIGS. 7 and 8, the compression assembly 75has the capability of providing five tobacco filler charges at a giventime. It is highly preferred that the size and shape of each lowerreceptacle area, and the ability of the other components of theapparatus to supply tobacco filler to each lower receptacle area, besuch that the lower receptacle can be readily filled with tobacco fillerin a complete, uniform and reproducible manner.

In the embodiment of FIG. 7, a compression arm 260 is positioned at theleft side of the compression assembly 75. The compression arm 260 is inoperable communication with a movable compression bar 621. Thecompression bar 621 is movable back and forth along the longitudinalaxis of the base of the compression assembly, and defines a bottomsurface of each receptacle 641. Five compression plates 630 are mountedto the top of the compression bar 621 and are movable with thecompression bar. A counter-clockwise movement of the compression arm 260moves the compression bar 621 and the compression plates 630 to theright. A representative compression bar is about 32 mm wide, about 33 cmlong, and about 3.5 mm thick. The compression bar may be made from anysuitable material and a representative compression bar may bemanufactured from any suitable metallic material, such as steel. Thecompression plates 630 may be manufactured from any suitable material,but preferably are manufactured from aluminum, steel or stainless steel.

The compression assembly 75 includes a set of compression assemblychannels 638 that run transverse to the longitudinal axis of theassembly 75. The compression assembly channels 638 provide for passageof a series of plunger insertion arms 251 from the plunger assembly 248therethrough. As is described in greater detail below, the plungerinsertion arms 251 function to push compressed charges of tobacco fillerfrom the lower receptacle area 641 into tubular wrappers 21.

During an operation of the compression assembly 75, a charge of tobaccofiller is allowed to pass from the hopper unit 99 above into thereceptacle area 641. The compression arm 260 is moved so as to move eachcompression bar 621 to the right, such that the compression plates 630simultaneously move toward the right. As a result, the tobacco filler ineach lower receptacle 641 is formed into a cylindrical charge.

When the compression assembly is in open position, as is shown in FIG.7, a preferred receptacle 641 has a height that approximates that ofeach compression plate 630. Most preferably, the length of thereceptacle 641 approximates that of corresponding opening in the topface of the compression assembly. Most preferably, the width of thereceptacle area 641 is greater than that of the width of thecorresponding fill slot 608 in the top plate 600 of the compressionassembly 75. Preferably, the right wall of each receptacle area isgenerally concave in shape in order to accommodate the forward andbackward travel of the front semi-cylindrical extension portion 695 of aplunger insertion arm 251 of the plunger assembly 248 that is used totransfer the cylindrical tobacco filler charges or rods from thereceptacle area 641 to the tubular wrappers. For the manufacture of arepresentative cigarette from a hollow tubular rod having a tobacco rodsection of about 56 mm in length and about 24.5 mm in circumference, arepresentative preferred receptacle area has dimensions of at leastabout 12 mm wide, at least about 58 mm long and about 6 mm high. Largersize receptacle areas can be used for the production of cigaretteshaving larger tobacco rods.

A representative compression plate has a length of about 6 cm, a widthof about 24.5 mm and a thickness of about 6.3 mm. For one preferredembodiment, the compression plates are equally spaced from one anotherat a distance of about 2.5 cm. The manner that the compression plates630 communicate with the compression bar 621 can vary. In someembodiments, the compression bar and compression plates extending upwardtherefrom can be of unitary construction. However, it is preferred thateach compression plate includes a downwardly extending pin that fitsinto a corresponding hole within the compression plate; and as such,compression plates can be removed for servicing of the apparatus, andcompression plates of desired sizes can be substituted within theapparatus.

Several filling nozzles 230 are positioned on the front of thecompression assembly 75. Representative nozzles preferably aremanufactured from brass or stainless steel. For the embodiment shown inFIGS. 7 and 8, the front of the compression assembly 75 includes fivefilling nozzles 230. Each filling nozzle 230 (shown as partially cutaway) is adapted to receive the open end of a tubular wrapping portion21 (several of which are shown as partially cut away in order to show apreferred positional relationship of the nozzles 230 relative to thetubular wrapping portions 21). Each filling nozzle 230 also is adaptedto position each tubular wrapper 21 in place and to act as a passagewayfor a cylindrical charge of tobacco filler from a receptacle area 641 towithin a corresponding tubular wrapping portion 21.

Referring to FIG. 8, there is shown a compression assembly 75 of thetype described previously with reference to FIG. 7. However, thecompression assembly 75 is shown with the compression plates 630 in aclosed position. Specifically, the leading edge of each compressionplate 630 (which preferably is concave to facilitate formation of acylindrical tobacco filler charge) is substantially flush with the leftedge of the corresponding channel 638. In addition, the compressionassembly 75 shown in FIG. 8 includes an alternate type of handlemechanism 645 for moving the compression applying compressive force tothe tobacco filler material within each receptacle. A representativecompression handle mechanism 645 is a De-Sta-Co Industries as “StraightLine Toggle Clamp” Model 603. The use of the compression mechanismembodiments of FIGS. 7 and 8 are particularly suited for use with acigarette-making apparatus that is bolted or otherwise affixed to abench top.

Referring to FIG. 9, there is shown a cross-sectional partial view(taken along line 9-9 of FIG. 1) of the cigarette-making apparatus 10,as viewed from the front and showing the inner regions of the hopperunit 99 and the compression assembly 75. The hopper unit 99 includes anupper reservoir region 110, a top wall 114 having openings 124 extendingtherethrough, vertical passageways 675, bottom wall 162 having bottomwall slots 395, and a bottom slat 165 (which is shown such that the slatapertures 368 thereof are aligned with the bottom wall slots 395). Thecompression assembly 75 includes a top plate 600 with fill slotsopenings 608 that are aligned with the bottom wall slots 395 of thebottom wall 162 of the hopper unit 99. The compression assembly 75 issupported by base 31.

As shown in FIG. 9, the compression assembly 75 is in a closed position.As such, each compression plate 630 is shown as having been moved to theright. As described above with reference to FIGS. 7 and 8, movement ofthe compression plates 630 to the right is accomplished by movement ofthe compression arm 260, which in turn causes movement to the right of alower compression bar 621 to which the compression plates 630 aresecured. As a result, tobacco filler that has fallen into the receptacleareas 641 of the compression assembly 75 when the compression assemblywas in the open position is pushed to the right by movement of eachrespective compression plate 630.

When the plunger assembly 248 is assembled to the compression assembly75, the right/leading face of each compression plate 630 and theinner/left surface of each respective plunger semi-tube 695 cooperate toform a generally cylindrical region. That is, the right/leading face ofeach compression plate 630 is sufficiently concave to form the generalshape of a semi-circle, and each cooperating plunger semi-tube 695 hasthe general open shape of a semi-circle. As such, movement of these twocomponents together and into proper alignment results in the receptacle641 taking on a generally cylindrical shape with a generally circularcross-section. As such, for each cooperating plunger semi-tube andcompression plate compressed into close alignment, a generallycylindrical charge of tobacco filler is formed.

For the hopper unit 99, each fixed wall 350 of each vertical passageway675 is shown so as to be substantially vertical. Each movable wall 360is positioned at a slight angle relative to vertical, such that thewidth of the vertical passageway 675 is slightly greater near the bottomthan near the top. For example, each movable wall 360 is positioned atan angle of 10 off vertical, tapering outwards toward its bottom. Indifferent embodiments, any or all of the walls 350, 360 may be verticalor slightly angled, but in preferred embodiments, the movable walls 360are at least slightly angled. The weights 177 of the hopper assembly 80are shown in a lowered position, such that each weight 177 extendswithin the corresponding vertical passageway 675 of the hopper unit 99.

Referring to FIG. 10, there are shown components of the plunger assembly248. The plunger assembly 248 includes a clamp or bracket 706, or othersuitable means, for secure attachment of the assembly to the belt 325 ofthe tobacco filler insertion/plunger mechanism 248. Any suitable clampor other attachment means may be used to attach the plunger assembly 248to the belt 325. In the illustrated embodiment, the clamp 706 is securedto a cross-member 257 using screws, bolts, spot weld, or other fasteningmeans, or through a unitary construction design.

Protrusions from the lower edge of the cross-member 257 support severalforward-extending guides 728. The guides 728 may be manufactured fromany suitable material, but preferably are manufactured from aluminum. Atension release wedge 740 is positioned at the front face of each guide.Each tension release wedge 740 is designed to cooperate with acorresponding tension arm located on the base 31 (as described above). Arepresentative forward facing guide and release wedge assembly extendsforward from the cross-member 257 by about 10 cm, and a representativewedge is about 7 mm high and about 9 mm wide. The front face of arepresentative release wedge is configured such that the face slopesdownward from back to front. That is, the shape of each tension releasewedge can be designed to cooperate with a corresponding shape of therear arm portion 390 of each tension control arm 365. In essence, theforward movement of the release wedge 740 acts as a cam to move the reararm portion 390, which acts as a cam follower. The result when the wedge740 is moved forward is an upward movement of the rear arm portion 390of the tension arm 365.

A plunger arm 251 is positioned above each guide arm 728, such that eachplunger arm 251 extends essentially parallel to each guide arm 728 andis supported by the cross-member 257. For the embodiment shown in FIG.10, the plunger assembly 248 includes five plunger arms 251.Representative plunger arms can be manufactured from any suitablematerial, but preferably are manufactured from stainless steel. Arepresentative plunger arm has dimensions of about 6.35 mm in diameterand about 15 cm in length.

Extending from the front face of each plunger arm 251 is a plungerpartial tube or semi-tube 695, or other suitable means for insertion oftobacco filler into a tubular wrapper portion. The plunger semi-tube 695is securely attached to the front end of the plunger arm 251, using anysuitable fastening means, such as, for example, unitary construction,spot weld, recessed rivets, adhesive, or recessed nuts and bolts. Asanother example, the plunger semi-tube 695 can include a tube portionthat fits over the front end of a cooperating plunger arm 251 and iscrimped thereabout.

The design of each plunger semi-tube 695 can vary. One preferred designfor a plunger semi-tube 695 is a generally semi-cylindrical tube with agenerally cylindrical base portion 760 attaching it to a correspondingplunger insertion arm 251. A representative plunger semi-tube is about67 mm long; about 15 mm thereof is a generally tubular region that fitsover the front end of the plunger insertion arm, and about 52 mm thereofis a generally semi-cylindrical region. A preferred semi-tube 695incorporates a plurality of teeth 765 on each side edge thereof (i.e.,the semi-tubular section includes two rows of teeth making the two sidesserrated). In a representative embodiment each row of teeth locatedabout 8 mm from the extreme front end of the semi-tubular section andextends about 28 mm along its length. Preferably the teeth are angledtoward the tip or front of the plunger arm assembly 248. A plungersemi-tube having serrated side edges facilitates effective forwardmovement of tobacco filler into a tubular wrapper portion, and alsofacilitates ready removal of the plunger semi-tube from the tubularwrapper portion while minimizing the likelihood of tobacco filler beingpulled out of the tubular wrapping portion.

Each plunger semi-tube 695 can be manufactured from any suitablematerial, but preferably is manufactured from a metallic material, suchas stainless steel. For example, a stainless steel tube of appropriatesize (e.g., having a circular cross-section of about 5.5 mm innerdiameter and about 6.35 mm outer diameter) can be machined to provide aplunger semi-tube of appropriate shape. Representative plunger semi-tubedesigns are incorporated in those types of cigarette-making devices thathave been commercially available as “Premier Supermatic”™ from TheCentral Tobacco Mfg. Co. Ltd.

Referring to FIG. 11, there is shown a rear view of the cigarettemanufacturing apparatus 10 described previously with reference toFIG. 1. In operation, the apparatus 10 preferably is positioned firmlyin place on a table, bench, counter, or the like. If desired, the bottomof the base 31 can be equipped with non-skid components (not shown),such as rubber legs, or the like. Alternatively, the apparatus can bepermanently affixed to components of a work station. For example, theapparatus can be bolted, clamped, or otherwise secured, to a bench top.

During an operation of the apparatus 10, loose tobacco filler materialis placed in the upper reservoir region 110 of the hopper assembly 80.Most preferably, the tobacco filler has the form of cut filler of adesirable particle size, and the tobacco filler is substantially absentof tobacco dust or fines. The tobacco filler is gently moved over eachopening 124 in the top wall 114 of the hopper unit 99 so that thetobacco filler falls into each corresponding vertical passageway 675,and into the lower region of the hopper unit 99. Preferably, for theembodiment shown, sufficient loose tobacco filler is introduced into thehopper assembly 99 to provide for adequate manufacture of more thantwenty cigarettes. Manipulation of the ball slides 170 to effectdownward movement of each weight 177 into each respective opening 124provides a desired compression of the tobacco filler in the lower regionof the hopper assembly 99. Reciprocating movement of the wall-movinghandle 160 moves the movable walls 360 and preferably promotes settlingof tobacco filler within each vertical passageway. As such, consistentor uniform filling of the relevant region with a consistent or uniformamount of tobacco filler is promoted.

Counter-clockwise movement of the compression arm 260 provides forformation of cylindrical charges of tobacco filler in the receptacleareas 641 of the compression assembly 75, as is described above withreference to FIGS. 7, 8, and 10. As such, components of the compressionassembly 75 alter the arrangement of tobacco filler within eachreceptacle 641 within the compression assembly 75 to form severaltobacco filler charges.

Explanation of an operation of the tension arms and other components isbest made with reference to FIGS. 1, 3, 5,10, and 11. In operation, acartridge 38 is placed on the front platform portion 382 of the base 31.The alignment of a tubular wrapper portion with each nozzle 230 of thecompression assembly 75 is such that the longitudinal axes of thenozzles 230 and the longitudinal axes of the tubular wrapper portions 21are essentially parallel to one another. Such alignment is facilitatedby fitting a mating groove 515 located on the bottom face of a cartridge38 with the key stock 410 protruding from the forward upper face 382 ofthe base 31. However, it is preferred that, for a nozzle 230 having itsbottom region protruding relative to its top region, the bottom regionof a corresponding tubular wrapping portion rests about 2 mm to about 3mm below the bottom portion of the nozzle. The cartridge 38 is movedrearward toward the tension arms 365. Preferably, the movement of thecartridge is performed manually by an operator, and the cartridge ismoved about 2 cm toward the rear of the base 31. As the cartridge 38 ismoved toward the tension arms 365, each corresponding tubular wrapperportion 21 preferably will ride up and fit over the corresponding nozzle230. Simultaneously, movement of the cartridge 38 against the front armportions 379 of the tension arms 365 causes the front arm portion 379 ofeach arm 360 to move downward. Downward movement of the front armportion 379 of each tension arm 365 results in formation of a spacebetween the upper arm surface 385 of each tension arm 365 and acorresponding nozzle 230, and hence provides clearance to allow thetubular wrapper portion 21 to slide over the nozzle 230. That is, aseach tension arm 365 rocks forward, each corresponding concave upper armsurface 385 cradles and lifts a tubular wrapper end from the cartridge38 and allows the open end of each tubular wrapper 21 to ride over eachcooperating nozzle 230. The forward rocking movement of the tension arms365 also compresses the tension arm springs 400. The cartridge 38preferably then is moved forward, away from the tension arms 365.Preferably, movement of the cartridge 38 is performed manually by theoperator, such that the cartridge is moved about 2 cm toward the frontof the base 31 and rests against the backstop wall 68.

This forward movement of the cartridge 38 away from the tension arms 365results in release of downward force thereupon. As a result, eachtension arm spring 400 uncompresses and forces pivoting of each tensionarm 365 rearward such that each upper arm surface 385 thereof movesupward and pushes a portion of the tubular wrapping portion against thenozzle (i.e., applies a clamping force to the tubular wrapping portion).That is, release of downward force on the front portion of each tensionarm 365 results in an upward movement of each upper arm surface 385,which clamps the lower inner surface of a corresponding tubular wrapper21 against the lower outer surface of a corresponding nozzle 230. Assuch, each tubular wrapper 21 is held securely in place so that acylindrical charge of tobacco filler may be transferred from thecompression assembly 75 into the open end of the tubular wrapper 21.

Movement of the plunger arm 261 works through the gears of the insertionmechanism 300 to cause forward movement of the of the plunger insertionarms 251 of the plunger assembly 248. That is, each plunger insertionarm 251 travels forward parallel to and above each correspondingguidance groove 346 as the forward-extending guides 728 extending fromthe underside of the plunger arm cross-member 257 track through theguidance grooves 346. The plunger arm assembly is explained in greaterdetail with reference to FIG. 10. A forward movement operation of theplunger assembly 248 causes the tubular wrapper portion 21 that isclamped to a nozzle 230 of the compression assembly 75 to be filled witha formed charge of tobacco filler. (Operation of the compressionassembly 75 to form charges of tobacco filler is explained in greaterdetail with reference to FIGS. 7 and 8.)

When the plunger assembly 248 has been moved forward sufficiently tofill the tubular wrapper portion 21 with a charge of tobacco filler, thefront face of each tension release wedge 740 at the forward end of eachforward-extending guide arm 728 reaches and contacts the rear armportion 390 of each corresponding tension arm 365. This contact causes aslight upward movement of the rear arm portion 390 of each tension arm365. As a result, the upper arm surface 385 of each tension arm 365 ismoved downwards. This downward movement of each upper arm surface 385results in release of the clamping force on the tubular wrapping portion21 to each corresponding nozzle 230, and each resulting finishedcigarette is released from the corresponding nozzle. Rearward movementof the plunger assembly 248 results in release of the upward pressure onthe rear arm portion 390 of each tension arm 365, and each tension arm365 is allowed to move freely back to its original position. Thiscompletes a single manufacturing operation cycle for one sub-lot ofcigarettes (five cigarettes in the illustrated apparatus 10).

The cartridge 38 then can be moved on the base 31 to either the left orright to align five more empty tubular wrapping portions 21 with thecorresponding nozzles 230 of the compression assembly 75. Themanufacturing operation cycle of filling five more tubular wrappingportions 21 with five corresponding charges of tobacco filler,preferably of consistent density, can then be repeated. It is highlypreferred that the cigarettes are manufactured without damaging (e.g.,tearing) the wrapping material at their lighting ends.

Referring to FIGS. 1, 3, 10, and 11, the gears 316, 317, 318 and thebelt 325 are arranged on the triangular-shaped base so as to undergomovement in response to movement of plunger arm 261. A counter-clockwisemovement of the plunger arm 261 results in movement the larger gear 318,which consequently causes movement by the belt 325 of the plungerinsertion assembly 248. Movement of the belt 325 results in forwardmovement of the plunger mechanism, which in turn, results in thetransfer or injection of each respective tobacco filler charge into eachrespective tubular wrapper as described above. As a result,substantially all of the tobacco filler contained within each receptaclearea 641 is formed into a cylindrical charge and is evacuated from thereceptacle areas 641. As such, several finished cigarettes 13 areprovided on the cartridge 38. A complete forward movement of the plungerarm 261 also causes release of each formed cigarette 13 from eachrespective nozzle 230 as the plunger insertion arms 251 push thecigarettes off. It is highly preferred that the extreme front end ofeach plunger semi-tube 695 move forward a sufficient distance so as tovery closely approach, or contact, the filter element of the tubularwrapping portions 21. As such, uniform filling of the tubular wrapper 21with tobacco filler is facilitated.

A clockwise movement of the plunger arm 261 results in rearward movementof the plunger assembly 248. A clockwise movement of the compression arm260 results in leftward movement of the compression plates 630 withinthe compression assembly 75. When the compression plates 630 are movedto the open position (i.e., to the left) another portion of tobaccofiller from each corresponding vertical passageway is allowed to fallinto each respective receptacle. Typically, the amount of tobacco fillerwithin each receptacle is controlled such that the tobacco filler fillsthe height of the receptacle (e.g., the approximate height/thickness ofthe compression plate), as well as the width and depth of the receptaclearea 641.

Weight applied to tobacco filler (not shown) in each vertical passagewayof the hopper unit 99, and movement of the wall-moving handle 160located on the front of the hopper unit, act to promote control of aconsistent amount of tobacco filler within each receptacle. In apreferred operation, the cartridge 38 is moved to the right, backwardand forward movement of the cartridge (to affix a set of tubularwrappers 21 to corresponding nozzles 230, as described above) isrepeated, and the movement of each of the compression arm 260 andplunger arm 261 is repeated, and as such, five more tubular wrappers 21are filled with tobacco filler. The weight 177 that has been droppedinto each vertically extending passageway can be lifted in order toallow additional tobacco filler to be introduced into each passageway.In this manner, an adequate supply of tobacco filler within eachreceptacle for formation of a tobacco filler charge of the desireddensity is facilitated. However, in a highly preferred embodiment ofusing the apparatus, sufficient tobacco filler will already have beenpositioned within each vertically extending passageway to provide forsuccessive filling of each receptacle with an adequate and consistentamount of tobacco filler during preparation of further finishedcigarettes.

With the illustrated embodiment, the above-described process can berepeated a total of four times, with the preferred result being that alot of twenty substantially identical cigarettes are manufactured andcontained within the cartridge. For each cigarette manufactured inaccordance with the foregoing process, it is highly desirable to havesufficient tobacco filler in each vertically extending passageway aboveeach receptacle to ensure supply of an adequate amount of tobacco fillerwithin each receptacle, and hence to provide for consistent filling ofeach pre-formed tubular wrapper with the desired amount of tobaccofiller. That is, it is highly desirable that whenever tobacco fillerwithin a receptacle is compressed into a first cylindrical charge, therebe adequate tobacco filler positioned in the vertically extendingpassageway above the tobacco filler in that receptacle to provide for atleast three more tobacco charges substantially similar in volume anddensity the first charge.

When complete, the cartridge 38 containing manufactured cigarettes canbe removed from the cigarette-making apparatus 10. In addition, the slat165 located on the bottom of the hopper unit can be shifted to theclosed position, the weights 170 can be raised, and the hopper unit 99can be refilled with tobacco filler, or removed from thecigarette-making apparatus 10 and replaced with another hopper unit 99.When the loose tobacco filler is handled and used to manufacturecigarettes in accordance with the present invention, it is highlypreferred that the various pieces of tobacco material that make up thattobacco filler undergo an extremely low degree of breakage ordegradation. That is, it is highly preferred that the cigarette-makingdevice be operated so as to cause an extremely low degree of degradationof the tobacco filler.

For the embodiments described with reference to FIG. 1 through FIG. 11,exemplary materials and designs for compression assembly components,tension arms, nozzles for tobacco filler transport and plunger assemblycomponents also are of the type that have been incorporated in thosetypes of cigarette-making devices that have been commercially availableas Premier Supermatic from The Central Tobacco Mfg. Co. Ltd., and“Escort” and “Pressta Deluxe” by CTC Canada Inc. See, also, thosecomponent materials, component designs and component operationdescriptions set forth in U.S. Pat. No. 3,127,900 to Kastner and U.S.Pat. No. 4,771,793 to Kastner, each which is incorporated herein byreference in its entirety.

For a preferred cigarette manufacturing apparatus 10, and componentsthereof, described with reference to FIG. 1 through FIG. 11, thatapparatus 10 is designed to produce five cigarettes substantiallysimultaneously, and the cartridge 38 thereof is designed to hold twentycigarettes. Suitable alterations to the apparatus and its components canbe made to produce any number of cigarettes at a given time (e.g., two,four, ten, twenty, or more). Suitable alterations also can be made toprovide a cartridge capable of supporting any number of cigarettes at agiven time (e.g., three, five, ten, thirty, forty, or more). Exemplarydevices can be characterized as those incorporating (a) at least tworeceptacle areas and including cartridges capable of holding at leastten tubular wrapping portions; (b) at least four receptacles andcartridges capable of holding at least twenty tubular wrapping portions;(c) at least five receptacles and cartridges holding at least tentubular wrapping portions; (d) at least five receptacles and cartridgesholding no more than forty tubular wrapping portions; or (e) no morethan five receptacles and cartridges holding no more than twenty tubularwrapping portions. Furthermore, the cigarette manufacturing apparatuscan be designed and adapted to introduce tobacco filler into tubularwrapping portions of larger or smaller size (e.g., the plunger arms andreceptacles can be made longer to fill hollow tubular wrapper portionsof longer length).

For a preferred cigarette manufacturing apparatus, and componentsthereof, described with reference to FIG. 1 through FIG. 11, thatapparatus 10 preferably is designed to produce small lots or batches ofcigarettes having consistent quality. For a particular selection oftobacco filler (e.g., as determined by factors such as composition,particle size, moisture content, and the like), and for pre-formedtubular wrappers of a particular size (e.g., as determined by factorssuch as the length and circumference of the hollow region), a pluralityof cigarettes can be made to specification by appropriate control of theoperation of various components of the apparatus. The size of thetobacco filler charge used to fill each hollow tubular wrapper portioncan be controlled; for example, by selecting appropriate dimensions ofeach vertical passageway, of each lower receptacle, of the compressionbars and associated components, and of the insertion arms and associatedcomponents. The dimensions of the various nozzles of the compressionassembly can be appropriately altered in order to produce cigarettes ofdesired circumference. The components of the compression and insertionmechanisms are designed to be set and operated in order that tobaccofiller charges are formed and inserted into hollow tubular wrapperportions consistently and in a controlled manner. Each compressionchamber is filled with tobacco filler in an automated fashion; andhence, precise control of amount of tobacco filler supplied to eachcompression chamber is achieved. Thus, supply of a consistent amount oftobacco filler within each tobacco filler charge is accomplished bycontrolling the density of the tobacco filler in each compression regionprior to the time that the tobacco filler is compressed into a the formof a cylindrical charge to insertion into the hollow tubular wrapperportion.

Other manners or methods can be employed in order to ensure that acontrolled amount of tobacco filler is distributed within eachvertically extending passageway and each cooperating receptacle. Forexample, in an alternative embodiment (that is not illustrated), thebottom region of each receptacle of the compression assembly can beadapted so as to be composed of a fine mesh screen or foraminousmaterial. That porous region can be adapted so as to be in communicationwith a slight vacuum (e.g., as can be provided by appropriate connectionto a vacuum source, such as a laboratory vacuum source). As such, thenegative air pressure applied to the bottom region of each receptaclecan act to pull tobacco filler material downward, and hence adequatelyfill each receptacle with a uniform and controlled amount of tobaccofiller. The degree of vacuum pulled on each column of tobacco fillerwithin each respective vertical passageway and receptacle can be altereddepending upon factors such as the amount of tobacco filler within eachvertical passageway.

Another manner or method for ensuring that a controlled amount oftobacco filler is distributed within each vertically extendingpassageway and each cooperating receptacle involves the use of ahydraulic plunger or spring mechanism. For example, for an embodimentthat is not shown, a hydraulically-operated plunger can be used to applydownward force to the tobacco filler in each vertical passageway, andthe amount of force applied to the tobacco filler can be decreased asthe amount of tobacco filler in the vertical passageway decreases. Asanother example of an embodiment that is not shown, a resistance springcan be positioned so as to vertically extend around an appropriatelyconfigured weight such that the weight can extend into the verticalpassageway and the spring rests on the top wall of the hopper unit. Assuch, as tobacco filler is removed from each vertical passageway as aresult of cigarette manufacture, the weight falls further into thevertical passageway, and the resulting compression of the spring resultsin the application of less downward compressive force by the weight tothe tobacco filler.

Referring to FIGS. 12 and 13, there is shown an trimming device 790 fortrimming tobacco filler from the ends of finished cigarettes 13. Thevarious components of the frame and chassis 791 of that device 790preferably are manufactured from a metallic material, such as aluminum.A cartridge 38 with finished cigarettes 13 lying in its grooves 48 ispositioned on a cartridge-holding platform 794 in the top, front regionof the device 790. Preferably, the filter ends of the cigarettes 13 allextend into the cavities 541 of the inner front face of the cartridge,such that the lighting ends 796 are all aligned across the back of thecartridge 38. The ends of the cigarettes 13in the cartridge 38extendbeyond the back edge of the cartridge. A removable tray 799 is locatedbeneath the cutting region 800 and is used to collect tobacco particlestrimmed from the lighting ends of the cigarettes 13.

The rear face of the cartridge 38 abuts a static lower ledger bar 808 ofa ledger that extends across the rear of the cartridge-holding platform794. The grooved upper face of the lower ledger bar 808 is adapted to bealigned with the grooves 48 in the upper face of the cartridge. Thus,when the cartridge is placed on the trimming device 790, each cigarette13 rests in a groove 48 on the cartridge 38 and a corresponding groovein the lower ledger bar 808. A movable upper ledger bar 806 has a bottomface that is configured to complement the shape of the cigarettesresting in the lower ledger bar 808. The movable upper ledger bar 806can be removable so as to be placed by hand over the lower ledger bar808, and thereby form the top of the ledger 804. The upper ledger bar806 can be attached in place by clips, or another suitable fasteningmeans. The upper ledger bar 806 also can be attached in place butmovable relative to the lower ledger bar 808 by use of an appropriatelypositioned hinge, or other suitable means. Preferably, the ledger 804 ismanufactured from a suitable metallic material, such as brass.Preferably, the back faces of the lower ledger bar 808 and the upperledger bar 806 are vertically aligned with one another. Most preferably,when the cartridge 38 is in place and the ledger 804 is closed, thepreferred lighting tips of the cigarettes 13 (as defined by the ends ofthe tubular wrappers 21) are aligned with the back faces of each of thelower and upper ledger bars 808, 806.

During an operation of the trimming device 790, a circular cutting blade810 is rotated at a very high rate of speed (e.g., 1200-2000 rpm) by amotor 812. The circular cutting blade/cutter 810 optionally is coveredby a blade housing 814. The motor 812 also may be covered by an optionalmotor housing 816. A representative motor is available as an inductionmotor 25 W (1/30 HP), 115V P/N 41 K25A-AWU from Oriental Motor USA Corp.A representative cutter constructed of tungsten carbide, and has adiameter of about 62 mm and a thickness of about 0.3 mm. The blade andmotor assembly preferably is securely mounted on a bar 818, or othersuitable support means, such that the rotating cutter can be moved backand forth. A representative bar is a ground and polished stainless steelrod of about 12 mm diameter.

The cutter 810 preferably is mounted perpendicularly to the longitudinalaxes of the cigarettes 13 in the cartridge 38, and so that it rotates ina vertical plane. The cutter 810 also is positioned so as pass veryclose to the lighting ends of the cigarettes 13. That is, the cutter 810is positioned so as to pass very close to the rear face of the ledger804, and hence, very close to the lighting ends of the cigarettes (asdefined by the ends of the tubular wrappers 21).

In use, the cartridge 38, containing cigarettes 13, is placed on thetrimming device 790, and the ends of the cigarettes 13 extending fromthe rear of the cartridge 38 rest in the corresponding grooves of thelower ledger bar 808. The upper ledger bar 806 is positioned over thecigarettes 38 to hold them in place. The motor 812 is started byactivating at switch 819, and the cutter 810 is rotated at a very highrate of speed (e.g., at about 1450 rpm). The cutter 810 is moved fromone end of the trimming device 790 to the other such that the cuttertrims away tobacco filler extending from the ends of the cigarettes 13.As such, the lighting end of each cigarette 13 preferably resembles inappearance the lighting end of a mass-produced cigarette manufacturedusing high-speed automated cigarette-making equipment, such as the typeset forth in U.S. Pat. No. 4,474,190 to Brand.

Referring to FIG. 13, there is shown a rear view of the cigarettetrimming device 790 described previously with reference to FIG. 12. Thecutter blade 810 and motor 812 are shown without coverings or housingsof the type shown in FIG. 12. The trimming device 790 includes aconnection 820 for attachment to an electrical power source. The lowerledger bar 808 is positioned such that the cutter 810 passes closelyacross its rear face. The assembly 815, including both the motor 812 andcutter 810, is mounted on a frame support 822 equipped with a pair ofsleeve bearings 824, 825, preferably having a 12 mm inner diameter. Thesleeve bearings 824, 825 of the frame support 822 travel along thesupport bar 818 (not visible in FIG. 13, see FIG. 12). The sleevebearings 824, 825 allow the cutter and motor assembly 815 to slide backand forth across a relevant region of the device 790. If desired, thecutter and motor assembly 815 alternatively can be mounted on a railmechanism, ball slides, or other suitable movable support means.Preferably, the cutting edge of the cutter blade 810 is positioned so asto be spaced no more than about 0.5 mm from the rear face of the lowerledger bar 808. The device 790 also includes a support region for acartridge 38. A longitudinal waste aperture 826 is located just rear ofthe lower ledger bar 808 on the top face of the device, and is employedsuch that tobacco particles trimmed from the ends of cigarettes (notshown) can fall into the lower tray 799 of the device 790 for disposal.Other mechanisms or methods for ensuring that the tobacco filler of thetobacco rod does not extend beyond the end of the rod defined by thepaper wrapper to any significant degree, within the scope of the presentinvention, will be apparent to those skilled in the art of cigarettemanufacture.

Referring to FIG. 14, there is shown an cartridge-filling device 830 forfilling a cartridge with empty pre-formed tubular wrappers 21. Thecartridge-filling device 830 includes a base 831 that supports acartridge-loading platform 832 and a tubular wrapper supply assembly833. These components can be manufactured from any suitable material,but preferably are manufactured from a metallic material, such asaluminum. A representative preferred cartridge-loading platform includespolytetrafluoroethylene.

The cartridge-loading platform 832 includes a key stock 834 formaintaining a suitably configured cartridge (e.g., a cartridge 38, asshown in FIGS. 5 and 6) in place, and an upwardly extending backstop 839for preventing undesirable forward movement of the cartridge during useof the cartridge-filling device 830. It is highly preferred that tubularwrapper portions 21 being loaded onto the cartridge are positioned ontheir sides, substantially parallel to each other, and perpendicular tothe longitudinal axis of the cartridge-loading platform 832. Preferably,the cartridge-loading platform 832 is disposed at a slight rear-to-frontincline such that its front edge with the backstop 839 is lower than itsrear edge.

The supply assembly 833 includes a movable upper reservoir 845 adaptedto hold a container 848 of tubular wrappers (box shown as empty). Arepresentative container 848 is a paperboard box containing two hundredpre-formed filtered tubular wrappers, each of which is about 24 mm incircumference and about 86 mm in length; and a representative box isabout 85 mm in height, about 90 mm in width, and about 145 mm in length.For the embodiment shown, the paperboard box 848 and the upper reservoir845 each are shown in an open position.

The supply assembly 833 also includes a hopper 851 that provides foralignment of a plurality of tubular wrappers. For the embodiment shownin FIGS. 14 and 15, the hopper 851 provides for the linear alignment often tubular wrappers. The hopper 851 is adapted to receive tubularwrappers from an open container 848 when the upper reservoir 845 isrotated about a hinge 854 so as to mate the bottom face 857 of the upperreservoir 845 with the top face 858 of the hopper 851 and therebyprovide the supply assembly 833 in a closed position (see FIG. 15). Thebottom face 857 of the upper reservoir 845 and the top face 858 of thehopper 851 are complementary in size and shape such that tubularwrappers readily can be emptied from the container 848 into the hopper851. Each tubular wrapper entering the upper region of the hopper 851preferably falls into one of a plurality of vertical passageways 862.The walls of the passageways 862, as well as the front and side walls ofthe hopper 851, preferably are manufactured from a clear material, suchas, for example, a clear plastic, so that supply of wrappers in eachpassageway can readily be viewed. Alternatively, the inner walls can bemanufactured from stainless steel, the side and back walls can bemanufactured from aluminum, and the front wall can be manufactured froma clear material. Of course, other materials and combinations ofmaterials may be used for the construction as well. Most preferably, thedimensions of the vertical passageways 862 are such that the tubularwrappers are stored as a single-file stack within each passageway 862.The embodiment shown in FIGS. 14 and 15 includes ten verticalpassageways. A representative vertical passageway has a width of about11 mm. Representative walls that provide for the various verticalpassageways each have a width of about 1.7 mm, a height of about 6 cm,and a length of about 8.5 cm.

A tray 870 having a plurality of tray grooves 873 in its upper face ispositioned beneath the hopper 851. The tray grooves 873 are aligned thatcorresponds to and lies beneath a vertical passageway 862. In theembodiment shown in FIGS. 14-16, the tray 870 includes ten tray grooves873, each of which extends longitudinally between the front and rear ofthe tray 870. The tray 870 is spaced below the hopper 851 at a distancethat approximates the outer diameter of the tubular wrappers thatultimately rest within each tray groove 873. Preferably, such a distanceis about 7 mm to about 10 mm.

Referring to FIG. 15, the upper reservoir 845 of the cartridge fillingapparatus 830 is shown rotated into a closed position, and thecartridge-filling device 830 is shown having a cartridge 38appropriately positioned thereon, with a plurality of wrappers 21 placedin grooves 48 of the cartridge 38. A slider system 880 is positioned tomove along the front-to-rear axis of the tray 870. The slider systemillustrated in FIGS. 14-16 includes two slider handles 881. The slidersystem 880 includes a sliding chassis 885 that slides along a track 888supported by the base 831. The slider system 880 also includes apusher-rod-supporting cross-bar 891, or other suitable attachment meansbetween the slider handles 881 to support a series of generallycylindrical pusher rods 895. The components of the slider system 880 canbe manufactured from any suitable material, but preferably aremanufactured from a metal, such as aluminum.

As illustrated, the slider system 880 includes ten generally cylindricalpusher rods 895. During an operation of the slider system 880, (i) onetubular wrapper 21 is allowed to fall into each of the tray grooves whenthe slider handles 881 are positioned toward the rear of thecartridge-filling device 830, with the filter ends of the tubularwrappers preferably oriented toward the front of the device 830 (ii) aforward movement of the slider handles 881 moves the pusher rods 895forward against the tubular wrappers within corresponding tray grooves873 such that they are ejected from the tray 870 onto the cartridge 38,(iii) the next tubular wrapper 21 in the vertical passageway 862 isprevented by one or both of the previous tubular wrapper 21 and pusherrod 895 from falling into the tray 870 prior to ejection of thatprevious tubular 21 wrapper from the tray 870 to the cartridge 38; and(iv) the slider handles 881 are moved back to the rear of the device 830so that the process can be repeated. The diameter and end surfaceconfiguration of each pusher rod 895 preferably is such that it willpush against the open end of a tubular wrapper 21 sufficient to move thewrapper without a substantial portion of the pusher rod 895 entering ordamaging the open end.

In operation, the cartridge-filling device 830 is positioned firmly inplace on a table, bench, counter, or the like. Alternatively, the device830 can be permanently affixed to components of a work station. When theupper reservoir 845 is moved to an open position, a box of pre-formedtubular wrappers may be placed in the reservoir 845, or tubular wrappersmay otherwise be loaded into the reservoir 845 (e.g., by hand). Theupper reservoir then may be rotated into a closed position. When thereservoir 845 is in the closed position, the tubular wrappers within theupper reservoir 845 fall into the hopper 851, and each tubular wrapperpreferably falls into a vertical passageway 862. Thus, for theembodiment shown in FIGS, 14-15, the hopper 851 includes ten verticallyaligned stacks of pre-formed tubular wrappers 21. Using thecartridge-filling device 830 as described, a plurality of tubularwrappers 21 can be transferred from a container to a cartridge and thenon to a manufacturing assembly without the necessity of touching any ofthe tubular wrappers by hand.

During continuation of a preferred operation described above, thecartridge 38 is moved on the cartridge-loading platform 832 such thatthe tray grooves of the device 830 are aligned with the remaining tenempty grooves 48 of the cartridge 38. The slider system 880 is movedforward to push ten more tubular wrappers 21 into the cartridge 38, andthe slider handles 881 of the slider system 880 are moved to the rear ofthe device 830 for later use. Thus, the cartridge may be loaded withtwenty tubular wrappers 21 in an efficient and effective two-stepmanner. The cartridge 38 containing the tubular wrappers 21 is removedfrom the cartridge-loading platform 832, and is introduced into acigarette-making apparatus, such as the type set forth previously withreference to FIG. 1 through FIG. 11. Another empty cartridge can beintroduced into the cartridge filling apparatus, and the process can berepeated. After a requisite number of cartridges have been filled, theupper reservoir can be opened and reloaded with a new supply of tubularwrappers.

FIG. 16 shows the base 831 and the slider system 880 of thecartridge-filling system 830 illustrated in FIGS. 14 and 15. Preferably,each of the cylindrical pusher rods 895 has a generally cone-shaped end900. Each cone-shaped end 900 facilitates the ability eject a tubularwrapper by pushing on the hollow end of that tubular wrapper. Arepresentative cylindrical plunger rod, suitable for use for ejecting afilter tubular wrapper portion having a total length of about 83 mm anda circumference of about 24.5 mm, has a length of about 80 mm and adiameter of about 8.2 mm. The rear portion of each plunger rod can bemanufactured from any appropriate material such as, for example,aluminum. The cone-shaped front end of each rod preferably ismanufactured from a soft material, such as nylon,polytetrafluoroethylene, synthetic rubber, or the like. A representativefront end of a plunger rod covers and/or provides about 2.5 cm of theforwardmost length of that rod.

Referring to FIG. 17, there is shown a schematic illustration of apackage-filling device 1051 for filling a cigarette package withmanufactured cigarettes. The apparatus 1051 includes a bottom frame1054. A representative bottom frame is about 27.5 cm wide and about 56cm long. A representative base may be manufactured from any suitablematerial, but preferably is manufactured from aluminum.

The bottom frame 1054 supports an upper platform 1058. The upperplatform 1058 is suspended above the base by left and right side walls1060. In a representative embodiment, the clearance between the upperface of the bottom frame and the lower surface of the upper platform1058 is about 3 cm. A representative upper platform may be manufacturedfrom any suitable material, but preferably is manufactured fromaluminum.

The upper platform 1058 includes an upwardly extending ejectionrod-supporting cross-member 1064 that extends thereacross. Extendinggenerally horizontally forward from the cross-member 1064 is a pluralityof ejection rods 1067. For the embodiment shown, the device includestwenty forwardly-extending ejection rods 1067, each with a substantiallycircular cross-section. A representative ejection rod has a length ofabout 7.2 cm and a diameter of about 4 mm and is manufactured fromsteel. The package-filling device 1051 preferably is adapted such thatin a region forward of the ejection rods 1067, there a positioningplatform region 1073 for a cartridge 38 filled with twenty cigarettes.It is highly preferred that the cigarettes within the cartridge arepositioned on their sides (e.g., the longitudinal axis of each cigaretteis parallel to, or substantially parallel to, the horizontal plane, andaligned with the longitudinal axis of the package-filling device 1051).The central portion of the positioning platform region 1073 includes abroad space open to the structures below, as is explained hereafter.

Below the front portion of the cartridge positioning platform region1073 are an inwardly sloping left panel 1076 and an inwardly slopingright panel 1077 that define the sides of an open center region 1079.Representative sloping panels are manufactured from sheets of highlypolished stainless steel. A representative open center region isgenerally rectangular with a width of about 8 cm and a length of about 9cm.

The upper face of the bottom frame 1054 includes a broad groove 1083,channel, or other means for providing for controlled movement of acarriage 1086 from the back of the base 1054 to the front of the device1051. A representative groove has a vertical depth of about 4 mm toabout 6 mm, a width of about 9 cm, and a length such that the grooveextends to within about 1 cm of the front end of the device. Thearrangement of the carriage 1086 and groove 1083 preferably are suchthat the carriage 1086 is easily movable within the groove 1083.Typically, selection of the respective shapes and dimensions of thecarriage and the groove define the arrangement of the carriage in thegroove. For example, the sides of the carriage and the sides of thegroove may be designed so as to cooperate in a tongue-in-groove type ofarrangement.

The carriage 1086 includes an upwardly extending handle 1089, such thatthe carriage 1086 can be moved back and forth. Within a recess 1093 inthe upper face of the carriage is positioned a cigarette package 1095 inan open position. A representative package 1095 includes a bottomcomponent 1098 for holding twenty cigarettes (not shown), and a topcover 1102 that is designed to close over the bottom component 1098. Arepresentative recess has a vertical depth of about 4 mm to about 6 mm;and a representative recess having a length of about 19 cm and a widthof about 9 cm can readily accommodate a package with a bottom componenthaving outer dimensions of about 8.2 cm wide, about 8.9 cm long andabout 18 mm high (such dimensions being measured when the box is in aclosed or sealed configuration).

In operation, the apparatus 1051 preferably is positioned firmly inplace on a table, bench, counter, or the like. Alternatively, theapparatus can be permanently affixed to components of a work station.Optionally, a pre-cut inner package wrapping paper, foil/paper laminateor paper-lined foil (not shown) is placed into the package 1095. Atypical foil sheet has a width that approximately the width of the innerportion of the package, and a length of about 16 cm. A forming block(not shown) having stamp face dimensions approximating those of theinner bottom face area of the package is used to push the foil into thebox. As such, the foil is creased within the bottom portion of the box.The forming block then is removed from the box so as to provide a boxhaving a type of inner liner (not shown) positioned therein. Inaddition, the foil most preferably is of such a length that tabs (notshown) extend from both of bottom front and back of the package.

A backstop 1110 located at the front of the carriage 1086 assists inmaintaining the package 1095 in place during operation of the apparatus1051. On the top face of the backstop 1110 is positioned a slot 1115.The slot 1115 preferably is designed such that inner package wrappingpaper or paper-lined foil (not shown) extending from the front bottom ofthe package 1095 can be fed into the slot 1115 in order that the foil ispositioned out of the way when the cigarette package 1095 is filled withcigarettes.

Referring to FIGS. 17 and 18, the package-filling apparatus 1051 isshown with a cartridge 38 containing twenty cigarettes 13 appropriatelypositioned on the positioning region of the upper platform 1073. Thecarriage 1086 has been moved forward, such that a package 1095 carriedthereby is positioned below the open center region 1079 beneath thecartridge. The device 1051 is designed such that the cartridge 38 can beslid on the upper surface of the upper platform 1058 towards the rear ofthe device. When the cartridge is moved rearward, each ejection rod 1067remains still such that each rod passes through the openings 550 in thefront surface of the cartridge 38 (see FIG. 6) and resists thecigarettes' rearward motion by pushing against the rear face of eachfilter element of each respective cigarette. Effectively, as thecartridge 38 is moved rearward, each rod 1067 passes through thecorresponding opening 550 in the front face of the cartridge 38, hencepushing the cigarettes 13 out of the cartridge. As such, cigarettes canbe removed from the cartridge without the necessity of turning thecartridge over to dump cigarettes therefrom or of tipping the cartridgeupwards so that cigarettes fall therefrom. The cigarettes 13 that arepushed from the cartridge 38 and fall through the open center region1079. The cigarettes 13 consequently fall into, and fill, the openpackage 1095 that is positioned in the below the open center region1079. An operator can use his/her finger to align the cigarettes withinthe package, but preferably the cigarettes are aligned without beingtouched, or are moved into alignment within the package using a tool(e.g., a nylon probe) that will not mar the cigarettes. The handle 1089then can be used to move the carriage 1086 rearwards in order to exposethe package filled with cigarettes. The filled package can be removedfrom the carriage and closed. A new empty package then can be insertedinto the carriage. Meanwhile, the empty cartridge can be moved forwardand removed from the device. A new cartridge filled with cigarettes canbe placed into the device. As such, the package filling process can berepeated.

For a representative device for filling a cigarette package withmanufactured cigarettes described with reference to FIG. 17 and FIG. 18,that device is designed to fill a package with twenty cigarettes.Suitable alterations to the apparatus and its components can be made tohold or transfer a greater or lesser number of cigarettes contained in acartridge. For example, a package designed to contain ten cigarettes canbe filled with the embodiment described with reference to FIG. 17 andFIG. 18 by loading ten cigarettes into the cartridge and using thedevice to fill that package.

Referring to FIG. 19, there is shown a perspective view of arepresentative package 1095 for cigarettes 13. The illustrated packageembodiment 1095 is of the type that has been referred to as a “shoulderbox.” The package 1095 is shown in an open position and is designed tocontain twenty cigarettes. As illustrated, the cigarettes are alignedwithin the package in two rows of ten cigarettes, with one rowpositioned over the second row. The packaged cigarettes preferably aremanufactured using the previously described equipment and materials. Thepackage 1095 preferably is manufactured from folded paperboard material,and can be of any type useful for the packaging of cigarettes.

The package 1095 includes a generally rectilinear top 1102 that opensabout a hinge 1190 that extends along the back side of the box. Thecigarettes are contained in the bottom component 1098 of the box 1095.The bottom component 1098 also holds a foil front flap 1192 and a foilback flap 1194 that can close over the cigarettes 13, or that can beopened to expose the cigarettes (as is shown). Representative types ofshoulder box packages have been commercially available, and theselection thereof is a matter of choice. If desired, the shoulder boxand associated wrapping materials can be embossed, printed with indicia,or the like. If desired, the package of cigarettes can be wrapped in aplastic or other film (e.g., a clear polypropylene film).

Other representative types of cigarette packages suitable for use withthe present invention includes those of the types set forth in U.S. Pat.No. 4,294,353 to Focke et al.; U.S. Pat. No. 4,534,463 to Bouchard; U.S.Pat. No. 4,852,734 to Allen et al.; and U.S. Pat. No. 5,139,140 toBurrows et al.; U.S. Pat. App. Pub. No. 2004/0217023 to Fagg et al. and2004/0256253 to Henson et al.; and German Pat. App. DE 10238906 to Marx.

Referring to FIG. 20, there is shown a longitudinal cross-section of apre-formed tubular wrapping portion 21. Such a wrapper portion has thegeneral shape of a cigarette, but is substantially devoid of thesmokable filler material that makes up a finished cigarette. The tubularwrapper 21 includes a hollow generally cylindrical region 1200 definedby cigarette paper wrapping material 1205 into which tobacco cut filleris inserted. That is, the tubular wrapper 21 is configured for receivingtobacco filler; and hence, for providing a wrapped, smokable tobaccorod. The tubular wrapping 21 preferably also includes a filter element1210 positioned at one end thereof. The filter element 1210 preferablyis attached to the wrapping material 1205 using a circumscribing tippingmaterial 1215. The filter element 1210 includes filter material 1220wrapped in a circumscribing plug wrap material 1225. The tippingmaterial 1215 and plug wrap 1225 may optionally include a line ofperforations 1230, in order that during use of the cigarette, mainstreamsmoke can be air diluted. The perforations 1230 may be provided duringor after cigarette manufacture using on-line laser perforationtechniques or the relevant wrapping materials may be pre-perforated.

Representative pre-formed tubular wrapper portions include those typesof filtered cigarette tubes that have been available commercially as“Premier Filter Tip Tubes” from C.T.C. Canada Inc.; “MacDonald Export‘A’ Express Kit Medium Regular Size Cigarettes Tubes” from RJR-MacDonaldInc.; and “Escort King Size Filter Tip Tubes” from C.T.C. Canada Inc.

Pre-formed tubular wrapper 21 can include filter and empty paper tubecomponents that remain upon removal of tobacco from existing cigarettes.For example, filter cigarettes can be manufactured using conventionalautomated cigarette-making techniques, and the tobacco can be ejectedtherefrom using, for example, the type of apparatus set forth in U.S.Pat. No. 4,763,673 to Barnes et al., which is incorporated herein byreference, or using other suitable means. As such, components used forthe manufacture of commercial grade filter cigarettes can be processedto remove the tobacco blend therefrom, and the resulting pre-formedtubular wrapper can be filled with a different tobacco blend in thefashion described above with reference to FIGS. 1-11. As such, it ispossible to prepare lots of substantially identical cigarettes, exceptfor a difference in a chosen smokable material within those cigarettes.

Referring to FIG. 21, there is shown a representative cigarette 13. Thecigarette 13 includes cigarette wrapping material 1205 that surroundsstrands or pieces of tobacco cut filler 1240, which is the smokablefiller material that makes up a core of the cigarette 13. The lightingend 1245 of the cigarette preferably is configured such that the cutfiller 1240 does not extend to any significant extent beyond the end ofthe wrapping material 1205. Preferably, cut filler 1240 extends about 1mm or less and, most preferably, about 0.5 mm or less beyond thelighting end of the wrapping material 1205 of the tubular wrapper 21.

The dimensions of a representative cigarette can vary. Preferredcigarettes are substantially rod shaped, with diameters of about 7.5 mm(e.g., circumferences of about 22.5 mm to about 25 mm); and totallengths of about 80 mm to about 100 mm. The length of the filter elementcan also vary. Typical filter elements can have lengths of about 20 mmto about 40 mm. In one preferred embodiment, the length of the filterelement is about 27 mm and the length of the tobacco rod is about 56 mm.Preferably the tipping paper circumscribes the entire filter element andextends about 4 mm of the length of the tobacco rod in the regionadjacent to the filter element.

Preferred wrapping materials of the cigarettes described hereinencompass a wide range of compositions and properties. The selection ofa particular wrapping material will be readily apparent to those skilledin the art of cigarette design and manufacture. The most preferredcigarettes have a single layer of wrapping material. Exemplary types ofwrapping materials, wrapping material components and treated wrappingmaterials are described in U.S. Pat. No. 5,220,930 to Gentry; U.S. Pat.App. Pub. No. 2004/0129281 to Hancock et al. and 2005/0039764 to Barneset al.; and PCT Application Pub. No. WO 2004/057986 to Hancock et al.and WO 2004/047572 to Ashcraft et al.; each of which is incorporatedherein by reference in its entirety.

Tobacco materials useful within cigarettes of the present invention mayvary significantly. Tobacco materials can be derived from various typesof tobacco, such as flue-cured tobacco, burley tobacco, Oriental tobaccoor Maryland tobacco, dark tobacco, dark-fired tobacco and Rusticatobaccos, as well as other rare or specialty tobaccos, or blendsthereof. Descriptions of various types of tobaccos, growing practices,harvesting practices and curing practices are set for in TobaccoProduction, Chemistry and Technology, Davis et al. (Eds.) (1999). Mostpreferably, the tobaccos used with the present invention are those thathave been appropriately cured and aged.

Tobacco materials for cigarette manufacture can be used in a “singlestrain” form. That is, the tobacco material used to manufacture thecigarette is composed of one type of tobacco (e.g., all of the tobaccofiller is a flue-cured tobacco). Typically, tobacco materials forcigarette manufacture are used in a so-called “blended” form. Forexample, certain popular tobacco blends, commonly referred to as“American blends,” comprise mixtures of flue-cured tobacco, burleytobacco and Oriental tobacco. Such blends, in many cases, containtobacco materials that have a processed form, such as processed tobaccostems (e.g., cut-rolled or cut-puffed stems), volume expanded tobacco(e.g., puffed tobacco, such as dry ice expanded tobacco (DIET),preferably in cut filler form). Tobacco materials also can have the formof reconstituted tobaccos (e.g., reconstituted tobaccos manufacturedusing paper-making type or cast sheet type processes). The preciseamount of each type of tobacco within a tobacco blend used for themanufacture of a particular cigarette brand varies from brand to brand.See, for example, Tobacco Encyclopedia, Voges (Ed.) p. 44-45 (1984),Browne, The Design of Cigarettes, 3^(rd) Ed., p.43 (1990) and TobaccoProduction, Chemistry and Technology, Davis et al. (Eds.) p. 346 (1999).Other representative tobacco types and types of tobacco blends also areset forth in U.S. Pat. No. 4,836,224 to Lawson et al.; U.S. Pat. No.4,924,888 to Perfetti et al.; U.S. Pat. No. 5,056,537 to Brown et al.;U.S. Pat. No. 5,220,930 to Gentry; and U.S. Pat. No. 5,360,023 toBlakley et al.; U.S. Pat. App. Pub. No. 2002/0000235 to Shafer et al.;2004/0084056 to Lawson et al.; 2004/0255965 to Perfetti et al;2004/0261807 to Dube et al.; and 2005/0066986 to Nestor et al; PCTApplication Pub. No. WO 2002/37990; and Bombick et al., Fund. Appl.Toxicol., 39, p.11-17 (1997).

Tobacco materials employed for manufacture of cigarettes in accordancewith the present invention typically have forms, and are used inmanners, that are traditional for the manufacture of smoking articles,such as cigarettes. The tobacco normally is used in cut filler form(e.g., shreds or strands of tobacco filler cut into widths of about 1/20inch to about 1/60 inch, often about 1/25 inch to about 1/50 inch,frequently about 1/30 inch to about 1/45 inch, and in lengths of about ¼inch to about 3 inches). One preferred form of cut filler has a cutwidth of about 40 cuts per inch. Tobacco cut filler is used in a looseform; that is, as a mixture of pieces of tobacco filler.

The amount of tobacco filler normally used within the tobacco rod of acigarette of the present invention preferably ranges from about 0.6 g toabout 1 g. The tobacco filler normally is employed so as to fill thetobacco rod at a packing density of about 100 mg/cm³ to about 300mg/cm³, and preferably about 150 mg/cm³ to about 275 mg/cm³.

If desired, the tobacco materials of the tobacco rod can also includeother components. Other components may include casing materials (e.g.,sugars, glycerin, cocoa and licorice) and top dressing materials (e.g.,flavoring materials, such as menthol). The selection of particularcasing and top dressing components is dependent upon factors such as thesensory characteristics that are desired, and the selection of thosecomponents will readily be apparent to those skilled in the art ofcigarette design and manufacture. See, Gutcho, Tobacco FlavoringSubstances and Methods, Noyes Data Corp. (1972) and Leffingwell et al.,Tobacco Flavoring for Smoking Products (1972).

It is desirable that the moisture content of the tobacco filler besufficiently high so that the tobacco filler does not undergo anundesirable degree of degradation during handling and processingassociated with cigarette manufacture in accordance with the presentinvention. It also is desirable that the moisture content of the tobaccofiller not be so high that the tobacco filler would exhibit undesirableclumping during handling and processing associated with cigarettemanufacture in accordance with the present invention. Preferably,cigarettes are manufactured using tobacco filler having a moisturecontent of about 12 weight percent to about 13 weight percent. Tobaccofiller most preferably is purchased immediately prior to use, and storedand handled in a manner such that moisture is not lost. For example,tobacco filler can be stored in sealed plastic bags, in sealed metaldrums, or the like. Typically, for normal situations of tobacco fillerhandling, tobacco filler can be shipped, handled and stored in sealedcontainers or plastic bags in amounts of about 5 kilograms.

Tobacco filler can be provided using techniques familiar in the art oftobacco blend formulation and preparation. Tobacco filler can beprovided using blending drums, air transport devices, or other suitablemeans that provides adequate physical mixing of pieces of tobacco fillermaterial. It is highly desirable that the tobacco filler, whether assingle strain or blended form, have the form of a consistent mixture interms of distribution of particle size, density of components andcomposition of components.

A small lot of cigarettes can be manufactured in accordance with thepresent invention as described above during a relatively short timeperiod. Typically, for a lot of cigarettes numbering approximatelytwenty, an appropriate amount of tobacco filler is selected, blended—ifmultiple tobacco types are selected—and loaded into a cigarette-makingmachine. Approximately twenty pre-formed tubular wrapper portions thathave been loaded within a cartridge are introduced to thecigarette-making machine, and those wrapper portions within thecartridge are loaded with tobacco filler such that approximately twentyfinished cigarettes are be manufactured. Excess tobacco filler can betrimmed from those cigarettes, and those cigarettes can be packaged. Allof the foregoing, can be carried out in less than about three minutes,and most preferably can be carried out in less than about two minutes.

A tobacco rod in a cigarette of the present invention preferablyexhibits good firmness and good integrity. Specifically, when measuredat 76° F. and 60 percent relative humidity using a Cigarette FirmnessTester Model No. CFTA supplied by Fairchild Industries, Winston-Salem,N.C., typical rods of 24.5 mm circumference and made by a conventionalhigh-speed cigarette-making machine yield firmness values of about 2 toabout 7 units. See, e.g., U.S. Pat. No. 4,962,773 to White et al. atcol. 5, lines 10-24. Cigarettes manufactured in accordance with thepresent invention typically are firmer than comparable cigarettes (interms of comparable component materials, sizes, formats and weights)that are manufactured using conventional automated cigarettemanufacturing techniques, such as the type of cigarette-manufacturingmachine available as “Protos” from Hauni-Werke Korber & Co. KG. Forexample, cigarettes manufactured in accordance with the presentinvention typically are firmer than comparable cigarettes manufacturedusing a “Protos”-type of cigarette-manufacturing machine by as much asabout 5 to about 7 units.

The selection of a particular filter element, including or in additionto a desired degree of air dilution, will be readily apparent to thoseskilled in the art of cigarette design and manufacture. Properties suchas the composition and size of the filter element, and the format andconfiguration of the filter element, can be a matter of design choice.Preferred filter elements are composed of plasticized cellulose acetatetow. Filter elements also can be composed of materials such aspolypropylene tow, gathered polypropylene web, gathered celluloseacetate web or gathered paper. Filter elements can be segmented innature. Filter elements can incorporate flavors, flavored pellets,breakable capsules, resin particles, activated carbon particles, and thelike. Preformed tubular wrapping portions incorporating filter elementscontaining volatile flavoring agents can be used promptly afterproduction, or stored in sealed containers until use is desired.

Preferred cigarettes of the present invention exhibit desirableresistance to draw. For example, an exemplary cigarette exhibits apressure drop of between about 50 and about 200 mm water pressure dropat 17.5 cc/sec. air flow. Preferred cigarettes exhibit pressure dropvalues of between about 70 mm and about 180, more preferably betweenabout 80 mm to about 150 mm, water pressure drop at 17.5 cc/sec. airflow. Typically, pressure drop values of cigarettes are measured using a“Filtrona Filter Test Station” (CTS Series) available from FiltronaInstruments and Automation Ltd.

Preferably, each tobacco rod is uniformly filled with tobacco filler.That is, it is highly preferred that each tobacco rod of each cigaretteof the present invention (i) include a sufficient amount of tobaccofiller, (ii) not contain tobacco fines that fall from the cigarette,(iii) not include what can be characterized as a “loose end,” (iv) havegood integrity throughout, and (v) not include low density or voidregions.

Preferably, cigarettes are manufactured such that substantially all ofthe cigarettes within a lot are of consistent quality. It is highlypreferred that cigarettes of a particular lot are comparable to oneanother in terms of appearance, size, shape, component materials,weight, tobacco filler particle size distribution, tobacco rod firmness,smoking properties, puff count, smoke yield, and the like. Preferredcigarettes within a lot each incorporate tobacco filler from acomparable source, and the weight of tobacco filler within eachcigarette differs by not more that 10 percent, more preferably by notmore than about 5 percent, and most preferably by not more than about2.5 percent. In a preferred cigarette-making operation using each of theabove-described devices, an operator never touches the tubular wrappersdirectly with her hands. This preferred mode of operation preventsmoisture, skin oils, or other materials on the operator's hands fromsoiling or marring the aesthetic appearance of the tubular wrappers.

In another aspect, the invention includes a method comprising the stepsof: providing a selection of tobacco appropriate for use in cigarettes;allowing a customer to select a tobacco or blend of several tobaccos;assembling the selected tobacco or blend of tobaccos substantiallysimultaneously into a plurality of cigarettes having substantiallyconsistent quality (including at least density and tobacco mass); andproviding at least some of the plurality of cigarettes to the customer.The method may further include packaging the plurality of cigarettes.

It is intended that the foregoing detailed description be regarded asillustrative rather than limiting, and that it be understood that it isthe following claims, including all equivalents, that are intended todefine the spirit and scope of this invention.

1. A device for cutting tobacco filler from the ends of cigarettes, thedevice comprising: (a) a platform configured for holding acigarette-containing cartridge; and (b) a cutting mechanism including ablade and configured for trimming tobacco filler extending from lightingends of cigarettes supported by the cigarette-containing cartridge. 2.The device of claim 1, wherein the platform comprises a grooved ledgerthat is configured for holding cigarettes on the cigarette-containingcartridge substantially parallel during an operation of the device. 3.The device of claim 2, wherein the ledger comprises a grooved upperledger bar configured to align with a grooved lower ledger bar.
 4. Thedevice of claim 3, wherein the grooved upper ledger bar is hingedlyconnected to the grooved lower ledger bar.
 5. The device of claim 1,wherein the cutting mechanism comprises a motor for moving the blade,the motor being mechanically connected to the blade.
 6. The device ofclaim 5, further comprising a slide mechanism configured to allow themotor to be moved parallel to a longitudinal axis of the platform, theslide mechanism comprising at least one sleeve bearing attached to themotor; at least one rod mounted parallel to the longitudinal axis of theplatform; and the sleeve bearing being in slidable mechanicalcommunication with the rod such that the motor is slidably movable alonga length of the rod.
 7. The device of claim 6, wherein the slidemechanism is configured such that, during an operation of the devicewhen a cigarette-containing cartridge is in place on the platform, theblade will cut tobacco filler of cigarettes supported by thecigarette-containing cartridge without cutting wrapping material of thecigarettes.
 8. The device of claim 6, wherein the platform comprises agrooved ledger that is configured for holding cigarettes on thecigarette-containing cartridge substantially parallel during anoperation of the device.
 9. The device of claim 8, wherein the ledgercomprises a grooved upper ledger bar configured to align with a groovedlower ledger bar.
 10. The device of claim 9, wherein the grooved upperledger bar is hingedly connected to the grooved lower ledger bar. 11.The device of claim 8, wherein, the slide mechanism is configured suchthat, during an operation of the device the blade maintains apre-determined minimum distance away from the ledger.
 12. The device ofclaim 11, wherein the pre-determined distance is about 1 mm.
 13. Thedevice of claim 11, wherein the pre-determined distance is about 0.5 mm.14. The device of claim 5, wherein the blade is a circular cutting bladeand, during an operation of the device, the motor rotates the blade. 15.The device of claim 1, comprising a removable receptacle below theplatform.
 16. The device of claim 1, comprising a blade housingconfigured to cover a portion the blade without interfering with anoperation of the blade.
 17. A method for cutting tobacco filler from theends of cigarettes, the method comprising: (a) providing acigarette-trimming device, the device comprising: (i) a platformconfigured to support a cigarette-containing cartridge; (ii) a rotatableblade actuated by a motor, the blade being configured to travel parallelto a longitudinal axis of the cigarette-containing cartridge; (b)positioning a cigarette-containing cartridge upon a device, thecigarettes being oriented perpendicular to the longitudinal axis of thecigarette-containing cartridge and oriented such that tobacco fillerprotruding from the lighting ends of those cigarettes extends across apath of the rotatable blade; and (c) actuating the blade and moving theblade to trim the tobacco filler.